Hammond Mfg - Power Transformer L.V PCB Mount

Hammond makes quality Transformers since decades. The History of Hammond is as old as the boom of Audio and Video products and the evolution of Consumer electronics itself.

They also make Chokes - Reactors, Classic Tube Transformers, Pulse Transform and Instrument Transformers which are used in Measuring AC Voltage and Current.



Hammond Mfg - Power Transformer L.V PCB Mount

• 20 output voltages to choose from (5 - 120VAC R.M.S.)
• Six VA size models available from - 1.1 to 36VA
• Both series operate on 50/60 Hz current
• Low profile, split bobbin design.
• Dual winding secondaries, non-concentrically wound
• Units are designed so that all windings must be used
• Low primary to secondary coupling - no electrostatic shield required.
• Choice of primary 115 or 230V - 50/60 Hz operation.
• High insulation - Hipot of 2,500V RMS.
• Class B insulation - 130 degrees C.
• Hammond 162 and 164 Series

Hammond Manufacturing is a leading manufacturer of industrial enclosures, electronic enclosures, rack cabinets, transformers, outlet strips and climate control products.

Hammond Mfg. Co. Inc

Hammond Manufacturing Company Limited
394 Edinburgh Rd North Guelph, Ontario, N1H 1E5 Canada

ES series - Low noise Precision HV Supply - Matsusada

Low ripple, high stability and various remote control functions, ES series ideal power supply for such application as PMT, MCP or Microscope.

ES series - Low noise Precision HV Supply - Matsusada



Some features

• Low ripple, High Stability
• Reversible polarity available
• 1 kV to 5 kV, 6 W and 15 W
• Remote analog programmable (option)
• GPIB interface (option)

Matsusada Precision Inc
745 Aojicho Kusatsu, Shiga 525-0041 Japan

Develops, manufactures HV Precision Supplies, X-ray products and Opto-Semiconductors Systems.

Programmable AC Electronic Loads - NH Research

4600 Series AC Electronic Loads are intended for applications that require the entire range of non-linear loading in order to thoroughly test AC-output power conversion devices.

To cover a wide range of UPS and inverter power levels, the 4600 Series AC electronic loads can be paralleled up to 62 instruments.

Programmable AC Electronic Loads - NH Research

The 4600 Series Programmable AC Electronic Loads are useful for testing the following applications & products: AC Sources, Circuit Breakers, Connectors, Fuses, Inverters, Switches, Uninterruptible Power Supplies (UPS).



Features Include

• 3 kW / 30 A modules expandable to 180 kW
• Power and crest-factor programmability
• 12 built-in, high-accuracy measurements
• Voltage 50 to 350 V
• Current 30 A per 3 kW module
• Frequency 45 to 440 Hz

NH Research, Inc.
16601 Hale Avenue, Irvine, California 92606, USA.

150 W DC Electronic Load - B&K Precision

The 8540 DC electronic load is a very compact, economically priced instrument that is at home on both the bench and the production floor. Though this is an instrument in a small package, it can reliably test a 5 volt power supply to 30 amps and do it continuously.

150 W DC Electronic Load - B&K Precision



The load can operate in CC, CV or CR mode while voltage/current or resistance/power values are measured and displayed in real time, making it well suited to test a variety of DC power sources.
Features Include -

Features

• Operates between 0-60 VDC, 1 mA-30 A (150 W maximum)
• Two current ranges: 3 A (1 mA resolution) and 30 A (10 mA resolution)
• Over-current and over-voltage protection
• Short mode to simulate shorts
• Save up to 400 instrument settings.

LD400 - DC Electronic Load - TTi

The LD400 is an inexpensive electronic load which is suitable for testing and characterising a wide variety of dc power sources. It can be used to investigate the behaviour of many different types of power source such as batteries and solar cells, as well as electronic power supply units.

LD400 - DC Electronic Load - TTi



The LD400 can operate at voltages below 500mV for currents up to 10 amps. At higher currents the fixed minimum resistance (typically better than 25mW) gradually raises the minimum operating voltage, but it remains below 1 volt up to 40 amps and below 2 volts up to 80 amps.

Aim-TTi
Glebe Road, Huntingdon, Cambridgeshire, PE29 7DR United Kingdom

Desktop Power Supply Immunity

Make the desktop architecture like laptop with regards to Power Electronics. I think now RAM's consume lower power. So every Desktop can come with a Li-ion Backpack based on some standard. 10Ahr 12V Rechargeable Battery. The entire Motherboard works on the 12V DC supply that uses Float Charging from mains.

Power Electronics & Solar Energy

The supply to computer is always derived from battery, the battery being constantly replenished. The charger also supplies power to computer board over the battery itself. Many lighting/inverter systems use this. The SMPS now is only a intelligent charger. Other voltage levels with DC/DC converters from that 12V.



Advantage -

1 - A user can easily upgrade the 12 V bus, another 12 V battery with smart charger; gives a boost of backup time. Probably intelligent batteries can come with built in float chargers, so that they can they can be bussed to form a 12v Tiny power grid for home which includes solar cells.

2 - When just the backpack is used, power fails. Harddisk, Monitor etc. sent to standby, low power mode. CPU then goes to quiescent state. The RAM keeps all data intact but goes to a low power mode. Alternatively quickly write a RAM image on a Flash Layer Built over RAM.

This makes the PC Impervious to Power Supply or UPS or other problems. Moves the desktop system to a 12 V standard. Drives desktop PC development to more Power Efficient designs.

Switching Supplies and SMPS

Easy integration into automobiles, bus, etc which have DC grid. Remote areas where no power is there. This will ensure desktops have a role in the future.

The charger SMPS has 1A charging current for Battery and 3A max for Computer. Total 4A max. A SuperCap can be added parallel to the Battery for Extra Inertia.

When power fails, in few seconds the system goes to standby. No program need to be closed. When power is restored they system comes up with windows and programs in the same positions of the last frozen state.

When a UPS is used, the system does not go down at all. The UPS just consists of a 10A Charger and a 12V 20AHr Battery. If the house has a 24V DC bus which is battery supported too. Then this can be used. As 24V is being developed as a new standard for internal power distribution. The PCs also can move to this manageable and safe standard for homes.

delabs - 2010

 ideas of delabs - id2020 

250 watt AC-DC power supply - Artesyn Emerson

A 250 watt, open frame, single output AC/DC power supply in an industry standard 4 x 7 format. This chassis mount power supply has a 85-264 AC volt Wide-range input AC input with power factor correction.

NLP250N-99S12J Artesyn/Emerson

 It is medical rated with an operating temperature range of 0 - 70 °C and up to 86% efficiency. The NLP250N-99S12J is Rohs 6/6 compliant.



Some Specs

• AC Input - Wide-range Inputs:    85 - 264 AC 
• Outputs:   - 12 Volts, 21 Amps, 250 Watts.
• Efficiency:  -  86% 
• Dimensions (L x W x H) -    7 x 4 x 1.5 in

Sager Power Systems
 
Sager Power Systems is a specialized group within Sager Electronics focused solely on power supplies. They offer over 15,000 world-class AC/DC and DC/DC standard solutions from leading power supply manufacturers, and is able to evaluate and specify standard and value added solutions.

Isolated AC-DC Converters with PFC - Vicor

The PFM is the lowest profile AC-DC solution in the market. Vicor's VIA package enables designers to efficiently package power into their system's thermal management solution.

Isolated AC-DC Converters with PFC - Vicor

For use in: Datacom/Telecom Equipment, LED Lighting, Bench-top Equipment and Industrial AC-DC Power Systems.



Integrated filtering, transient protection, inrush protection: Simplifies conducted emissions and surge protection design, reduces design risk, faster time to market

High efficiency of up to 92%: Excellent efficiency for such a small and low profile device

Active Power Factor Correction (PFC) exceeding .95 at most line/load conditions (filter dependent):
Meets all agency standards

Voltage, current, and temperature protections: Protects the PFM unit and system

Vicor DC-DC Converters and Power Supplies

Power Supply, AC-DC Converters, Vicor Corporation designs, manufactures and markets modular power components and complete power systems used in the communications, data processing, industrial controls, test equipment, medical and defense electronic markets.

CAR1248FP front-end power supply - GE

Efficient and Compact, the CAR1248FP is a front-end power supply module for distributed power applications. The CAR Series of front-end rectifiers provide highly efficient isolated power from worldwide input mains in a compact 1U industry standard form factor providing an unprecedented power density of 30W/in3.

CAR1248FP front-end power supply - GE

It takes an AC input and outputs a regulated single output voltages of 48Vdc. Enclosed in 1U package it has 1200 Watts of power capability.



It has all the protection you need including overvoltage, overcurrent and overtemperature.

Features Include

• High Power Density (19W/in²)
• 91% typical efficiency
• N+1 Redundancy / Hot-Swap Operation
• 3.3VSB, Active Load Sharing, I²C and PMBus
• Remote On/Off and Remote Sense functions

(Lineage Power - Power Conversion Solutions)

"Energy-efficient AC/DC and DC/DC embedded power, indoor/ outdoor energy systems."

Technical Resource - Marc Dekenah

Useful resource on Power Quality, Radio Telemetry, T&M and Interfacing.  Marc's Technical Pages; knowledge-base of Faultlink International, an independent electrical / electronics fault investigation & analysis consultancy.

Technical Resource - Marc Dekenah

Economical Impulse Generator, Measuring in Excess of 1kV, "Soft Earthing" Instruments and A Real LAN twist cable are pages you must read.



Marc is an independent electrical/electronic fault investigation and analysis consultant with over 25 years of industrial electrics/electronics experience as Consultant, System Engineer, Technical Director, Design Engineer and more.

Connecting Up For Intermittent/Nuisance Trips

"Intermittent trips are circuit breakers rightfully operating because of an unknown cause or fault. Nuisance trips are a breaker deeming a non-existent fault has occurred and, in so doing, operates without need."

FaultLink International - Electrical Power Diagnostics

"Faultlink International is a fully independent broad-range electrical/electronics fault investigation and analysis consultancy."

Earthing Practice and Power Quality

"Earth leakage currents arise mainly from the EMC filters built into electronic equipment with switched mode power supplies. Standards limit the leakage current from non-fixed equipment (i.e. equipment that plugs into a standard socket outlet) to less than 3.5 mA. When a lot of electronic equipment is in use, the total leakage current in the protective conductor can become significant."

Earthing Practice by Trevor Charlton

• Methods of Earthing
• Earth Conductors
• Electrical interference
• Lightning Protection

Power Electronics & Solar Energy

Power Quality and Utilisation Guide

The PQ E-library is a collection of electronic technical reference documents covering introduction, costs, harmonics, resilience, voltage disturbances, earthing, energy efficiency and renewables/distributed generation. See also - Power Quality

Copper Development Association

• Educational Resources
• Computers cannot work without copper
• Electricity in buildings

Copper Development Association Website for information on Copper and Copper Alloys

Copper Development Association - Resource Library

Copper Development Association provides a range of resources in support of the correct and efficient use of copper and copper alloys for major applications.

Power Electronics Design Methods

I first saw this practically in the Orthodox Cherokee SMPS. This is where we differentiate from Engineered Products and just Mass Production without following standards. The Cherokee SMPS was a work of art, perfect in all respects.

The Copper Desert or Isolation Land

There is a No Man's Land in PCB. Any good power electronics designer should/will know. Product Safety and HV Isolation, Quality and Reliability all depend on this.

High Energy Circuits



These things don't come overnight, it is a culture, learning, experience and integrity of some of these American Firms. Reliability and Product safety are important. Every human values his life very much. A manufacturer too should appreciate this.

Coming back to isolation, Keep in mind creepage distance, High energy circuits and Low voltage circuits should have clear isolation, use the best insulation. Fire and shock hazard. Mains HV transitions, spikes.

Regulated High Voltage Power Supply

Power supply faces all these, even other areas where a Human Life or Property can be endangered.

HV High Voltage Reliability and Safety

Use a Servo Stabilizer or CVT Constant Voltage Transformer or at least an Isolation Transformer. The First Defense form HV Surges, Spikes.

High Voltage Polyester & Polypropylene Metallized Capacitors in Stepdown Supplies should be Fire Retardant & Self Healing with a MOV too.

UPS Power Inverter and DC to AC

Learn about Power flow, Sags, Dips, Phase rotation, Harmonics, Flicker and more!



Power Quality Teaching Toy

Standards

CBEMA - Computer Business Equipment Manufacturer's Association adopted curve IEEE Standard 446 (orange book) curve. Recommended Practice for Emergency and Standby power systems for Industrial and Commercial Application."


Main Points

• Wave form Sine wave THD (total harmonic distortion) maximum 5%.
• 3 Phase system phase imbalance of voltage 3% - 6%.
• Frequency stability 60  +/- 0.5Hz.
• Output Voltage +6% Max. -13% Min. from Nominal Value.
• Voltage can fall to 0V but should recover in 0.5 Cycles.
• On turn on Voltage should reach steady state within two seconds.
• Upto 200% over Nominal Voltage should be tolerated for 100uS. ( Transients, spikes and Inductive Kickbacks come in this)
• Upto 30% over Nominal Voltage should be tolerated for 0.5S.

ANSI - American National Standards Institute

"Standard Voltage Ratings for Electrical power systems & Equipment"

• Steady State Variations +/- 5% of Nominal Voltage. T
• Three Phase Voltage Imbalance 5% Max..
• Standard Frequency 60Hz.

Glossary

• Frequency 60Hz Hz is Hertz.
• One Cycle = 20mS (milliseconds) one full sine wave.
• Standard Frequency is 50Hz in many countries.
• Max - Maximum
• Min - Minimum
• uS - micro seconds, S - seconds.

Cause of Transients

1. Switching Loads Simultaneously (inductive loads).
2. Power factor correction capacitors and devices.
3. Lightning strikes (enhanced by earth faults).
4. Line Inductance (inductive kickback, resonance).
5. DC and AC Drives for Motors.
6. Rectifiers with large filters and stray inductance.

CBEMA Guideline
The CBEMA guideline, created by the Computer Business Equipment Manufacturers Association is a realistic, at-the-equipment, maximum allowable voltage that equipment can withstand, without damage or upset.

Sine wave Inverter 800VA

 Here are two Sine wave Inverter circuit applications that can be made into an UPS or Uninterrupted Power Supply. These are used in Home, Office and Shops. It provides emergency power when Mains power goes down or browns out.



These also help supply power while switching from Mains Power to In-house Diesel Generation  Power Stations or Integrate with Solar Powered Systems to provide 110 Volts or 220 Volts AC.


800VA Pure Sine Wave Inverter - High Performance Isolated Power

This application note describes the design principles and the circuit operation of the 800VA pure Sine Wave Inverter.

800VA Pure Sine Wave Inverter's Reference Design, slaa602 - TI.com

The pure Sine Wave inverter has various applications because of its key advantages such as operation with very low harmonic distortion and clean power like utility-supplied electricity, reduction in audible and electrical noise in Fans, fluorescent lights and so on, faster, quieter and cooler running of Inductive loads like microwaves and motors.

Power inverter is a device that converts electrical power from DC form to AC form using electronic circuits. It is typical application is to convert battery voltage into conventional household AC voltage allowing you to use electronic devices when an AC power is not available. There are basically three kinds of Inverter out of which, the first set of inverters made, which are now obsolete, produced a Square Wave signal at the output.

Texas Instruments, Application Report SLAA602 , June 2013

DC to AC Pure Sine Wave Inverter

Here are project reports on how to manage the various design needs of a inverter for a power ups. Even Solar Energy systems need inverters to create AC Sine Wave Power Supply from a DC Battery Array.



Creating a Efficient and Inexpensive Inverter - By Jim Doucet, Dan Eggleston, Jeremy Shaw

This report focuses on DC to AC power inverters, which aim to efficiently transform a DC power source to a high voltage AC source, similar to power that would be available at an electrical wall outlet. Inverters are used for many applications, as in situations where low voltage DC sources such as batteries, solar panels or fuel cells must be converted so that devices can run off of AC power.


PWM Techniques: A Pure Sine Wave Inverter - Authors :Ian F. Crowley and Ho Fong Leung

This report documents the development of one component of an uninterruptible power supply, the DC-to-AC inverter. Through the use of analog signal processing techniques, a prototype which efficiently and accurately emulates the pure-sine wave power present on the power grid was created. The three-level PWM system within this report is created with the possibility of a feedback-regulated system to be implemented in the future.

MQP Terms A­B­C 2006 ­2007, Advisor: Professor Stephen J. Bitar

WARP Speed IGBT - International Rectifier

IGBTs are voltage-controlled power transistors, that have higher current densities than equivalent high-voltage power MOSFETs. (International Rectifier now with Infineon)

WARP Speed IGBT - International Rectifier

Features Include

• 2 to 2.5 times the current density of MOSFETs
• Lower conduction losses at equivalent current rating compared to MOSFETs
• Reduced current tail for high frequency operation
• "Positive-only" gate drive

600V Warp 60-150 kHz Discrete IGBT in a TO-247AC package



Lower switching losses allow more cost-effective operation than power MOSFETs up to 150 kHz ("hard switched" mode)

Of particular benefit to single-ended converters and boost PFC topologies 150W and higher

Low conduction losses and minimal minority-carrier recombination make these an excellent option for resonant mode switching as well (up to >>300 kHz)

The IGBT in TO-247 delivers the same efficiency at full loadas the MOSFET in the larger TO-247 package.

AMETEK Programmable Power

Elgar, Sorensen and Cailifornia Instruments Products. A wide range Electronic Loads are available from 75-1800W with both DC and AC input in benchtop, modular and standalone form factors. Other products are DC Power supplies AC Power Sources, Modular AC/DC Units. Services like Compliance Testing and Custom Products.

AMETEK Programmable Power

SLM Family Electronic Loads - The SLM family includes 11 models of fully programmable, single input AC or DC modular electronic loads. DC models are offered to test power supplies, battery chargers, battery discharge, power supply transient response and integration into ATE systems. AC models are ideal to test low power inverters.



SL series Electronic Loads - Sorensen

The DC models support operation in Constant Current, Constant Voltage, Constant Resistance or Constant Power mode as well as a short simulation. Engineers have ultimate control of current waveforms by using either the analog input or CC dynamic mode. An analog input (single input DC models) allows arbitrary current waveforms up to 20kHz with an external 0-10V signal........

AMETEK Programmable Power, Inc.
9250 Brown Deer Road, San Diego, CA 92121, USA.

PS300 Series - High Voltage Power Supply - SRS

Industry standard HV Precision Lab power supplies with up to 20 kV output capability. GPIB and RS-232 computer interfaces are standard on all 10 W supplies.

All of the instruments are arc and short-circuit protected with separate programmable hard and soft current limits, making it possible to use them as constant current sources.

PS300 Series - High Voltage Power Supply - SRS



The PS310, PS325 and PS350 are dual-polarity, 25 W supplies, while the PS355, PS365, PS370 and PS375 are single-polarity, 10 W supplies. All of the instruments are arc and short-circuit protected with separate programmable hard and soft current limits, making it possible to use them as constant current sources.

Specs Include

• 1 volt resolution
• 0.001 % regulation
• 0.05 % accuracy
• Programmable limits and trips
• 0.0015 % ripple

Stanford Research Systems, Inc.
1290-D Reamwood Avenue, Sunnyvale, CA 9408, USA.

HPQ-12/25-D48PBH-C - Murata Power Solutions

Here is a  12V, 25A, Single Output Isolated DC/DC Converter, Positive polarity from Murata Power.

HPQ-12/25-D48PBH-C -  Murata Power Solutions



"Advanced automated surface mount assembly and planar magnetics deliver galvanic isolation rated at 2250 Vdc for basic insulation. To power digital systems, the outputs offer fast settling to current steps and tolerance of higher capacitive loads. Excellent ripple and noise specifications assure compatibility to CPU’s, ASIC’s, programmable  logic and FPGA’s. .."

Features Include

• Industry standard quarter brick 2.3 x 1.45 x 0.49 open frame package
• Wide range 36 to 75 V DC input voltages with 2250 Volt Basic isolation
• Up to 300 Watts total output power
• High efficiency (94.5%) synchronous rectifier topology
• Stable no-load operation with no required external components

Electrical Safety and Clean Power

This is an educative and important guide for Electrical Equipment Safety. This can be also applied partially to Power Electronics and Home Energy Systems. Electronic Equipment also have to be maintained by Calibrating them and protecting them from environmental parameters like dust, grime, direct sunlight, moisture, humidity, sea wind (brine), corrosive fumes and chemicals. They should not be even placed near machines like a big lathe, sub-sonic or low frequency vibrations.

Electrical Safety Testing Reference Guide

Electrical Safety is a Serious Issue Electrical Safety in the workplace is the most important job of an electrical worker. No matter how much training one has received or how much employers try to safeguard their workers, Electrical Safety is ultimately the responsibility of the electrical worker.



Electrical Safety Hazards Handbook

Power Studies, Arc-Flash Hazard Labeling, Data Gathering and Inspection, Engineering Services.

The steps to osha electrical safety

Electrical Design, Lighting and most important Earthing or Grounding. Good Reference Articles and Product Reviews.


Electrical Construction and Maintenance Power Quality, National Electric Code, Construction, V/D/V, Ops, Equipment Rental Industry Resourc

Earthing or Grounding is something Audio Enthusiasts make a lot of fuss about. The Articles here about Balanced Power, Symmetrical Power Systems and Earthing throw light on ways to counter Audio Noise.

AC Power has the 50/60 Hz noise, now more AC noise can be picked up by poorly designed systems when so many gadgets around. These articles are also relevant for the instrumentation engineer. Dissonance is encountered when you build sensitive strain gauge based measurements or while measuring and transmitting micro-volts from a remote sensor to the dashboard/control panel.

Index of Technical Articles About Balanced Power

International leader in electromagnetic compatibility (EMC) and power quality (PQ). EMC Filters, RFI Suppression Chokes, Feedthrough Components.

Schaffner - electromagnetic compatibility

 Schaffner - EMC/EMI components, harmonic filters & magnetic components.

Inverter S150 from Cotek - Current Solutions

This is a True Sine Wave Output Inverter with a THD 6% Typ. It is DC to AC Conveyor. That means you use Batteries to derive a High Voltage AC like the Mains Utility Supply.

Inverter S150 from Cotek

The output selection of 100/110/120 VAC covers the US region and similar areas. The input being 12VDC / 24VDC.  This is a small 150 Watts unit ideal for Small Solar power systems and lighting.



Specifications Include

• Input & output fully isolation
• Input polarity reverse / under voltage / over voltage protections
• Output short circuit / overload / over temperature protections
• Capable of driving highly reactive and capacitive loads

Current Solutions OEM Power Products

They match your product with the ideal power supply taking into account all the intricate variables..   

OEM Power Supply Resource Inverters, Converters and Adapter. They help you in selecting the proper power supply as they have the experience and the Specialists.

Current Solutions, Inc.
P.O. Box 1538, Land O' Lakes, FL 34639-3929, USA

Pure Sine Power Inverter 2KW - AIMS Power

AIMS Pure Sine Wave Power Inverters provide reliable transformation of DC power from a battery into AC power that can then be used to run lights computers, printers and even medical equipment.

2000 Watt Pure Sine Power Inverter

This is an industrial-grade unit with the ability to withstand surges of up to 6000 watts for 20 seconds, and  it achieves this by virtue of its direct connect terminal block. This feature is one of the more sought-after in the inverter industry, allowing users to surpass the 1,500 watt maximum output of a GFCI outlet that would typically be seen on an inverter.



The 2000 watt 48 volt low frequency AIMS Power inverter charger transforms DC (direct current) power, produced by solar panels and stored by batteries, into AC (alternating current) electricity that can be used to run most all tools and appliances. This inverter also has a built in AC-to-DC battery converter charger, which allows users to recharge their battery bank from an AC source such as a fuel-powered generator, shore power or a regular outlet at home.

AIMS Power
9736 S. Virginia St. STE A Reno, NV 89511, USA

Manufactures, designs and distributes dc power inverters, chargers, transfer switches, and related green energy products.

Battery Boost Circuits

(This is a thread of my Google Talk many years ago - you will be able to notice text communication is quite difficult. sometimes even verbal expression will not specify the need, We need clear drawings and specs)

Sam: I was going thrugh some IC like MAX8880/MAX8881, can u help me with using that with input from my batteries?

dapj: let me see

Sam: It's datasheet says that Supply current [Iin] = 10uA max does it mean it will draw a max of 10uA from my battery?

dapj: it looks like it will work from 2.5 to 12V and it can give you a 5v out 200ma

Sam: Exactly!

dapj: is 5V enough 200mA too, but it cannot boost voltage

Sam: my concern is with my input. What about using rechargeable batteries [4x1, 2100mAh] to act as input to this IC. will it consume 10uA if I do so while my load to the output may vary from 100mA to 200uA



dapj: if you want 5V you need to feed this atleast 5.5V this chip does not consume anything (the uA is Standby consumption )but it is not a voltage doublet or a charge pump

Step-Up/Step-Down Converter Features Ultra-Low Quiescent Current

Sam: OK, I need to feed it anything between 5.5 -12V, Do we get recharge battery near about 2V, 2100mA

dapj - a 12 v battery can be recharged when 11.8V is reached it may charge upto 12.8 V in Li ion

Fast, smart NiCD/NiMh battery charger - The MAX713 is designed for NiCd batteries, while the 712 is for NiMh batteries.

CM100E3U-12H - 100A 600V IGBT - Powerex

Each module consists of one IGBT Transistor having a reverse-connected superfast recovery free-wheel diode and an anode-collector connected superfast recovery free-wheel diode. The Powerex Chopper IGBTMOD Modules are designed for use in switching applications.

CM100E3U-12H - 100A 600V IGBT - Powerex

Built in Discrete Super-Fast Recovery (150ns) Free-Wheel Diode.  This is used in Power Product Designs like DC Motor Controls and Boost Regulators.



All components and interconnects are isolated from the heat sinking baseplate, offering simplified system  assembly and thermal management.

Features

• Low Drive Power
• Low VCE(sat)
• High Frequency Operation (15-20kHz)
• Isolated Baseplate for Easy Heat Sinking

Powerex, Inc.
173 Pavilion Lane, Youngwood, PA 1569715697, USA.

MPower Solutions - Battery Management

Custom Battery Packs, Battery Management Systems, Batteries 101, Battery Technology Encyclopaedia and Tutorial. Chargers & Charging, Battery Management and Cell Chemistries.

MPower Solutions - Battery Management

The site contains a comprehensive knowledge base about battery technology, battery applications, chargers and ancillary equipment.

MPower is an independent service company providing specialist design and manufacturing services to meet the portable power requirements of the European electronics industry.



Fuel cells have been around longer than most batteries - the principle of the fuel cell was discovered in 1839 by Sir William Grove. They generate electricity from the reaction of hydrogen with oxygen to form water in a process which is the reverse of electrolysis.

Battery and Energy Technologies

The fuel cell relies on a basic oxidation/reduction reaction, as with a battery, but the reaction takes place on the fuel rather than the electrodes. The fuel cell produces electricity as long as the cell receives a supply of fuel and can dispose of the oxidized old fuel .

Woodbank Communications Ltd
Woodbank, South Crescent Road , Queens Park Chester, CH4 7AU United Kingdom.

High Efficiency Step Down Isolated Supply

60W AC-DC adapter, synchronous rectification, fixed frequency current mode PWM controller. Very Low Quiescent Burden, Efficiency above 85%. That's Green.

STMicroelectronics - EVALSTSR30-60W. Synchronous rectification using L6668 and STSR30.


EVALSTSR30-60W: 60W AC-DC adapter

The converter works in both Continuous and Discontinuous conduction mode depending on the input voltage (the circuit has a wide input voltage range) and the output load. The 68-kHz switching frequency provides a good compromise between the transformer size and the harmonics of the switching frequency, optimizing input filter.

The input section includes protection elements (varistor, fuse and NTC for inrush current limiting), a standard Pi-filter for EMC suppression, a bridge and an electrolytic bulk capacitor as the front-end AC-DC converter. The transformer is a layer type, uses a standard ETD34 ferrite core and is designed to have a reflected voltage of 95V. The power MOS is a 700V - 1Ω and a transil clamp network is used for leakage inductance demagnetization.

From STMicroelectronics

Schott Magnetics - Inductors Transformers Coils

Schott Magnetics designs and manufactures custom and standard inductors, transformers, coils, toroid magnetics, chokes and custom designed magnetic components.

Schott Magnetics - Inductors Transformers Coils

Cost effective transformers and inductors for the power supply, avionics, military, medical, test & measurement, industrial, automotive and commercial applications.

History - "Schott began as a part-time home business in 1946 by its founder, Oscar A. Schott. Due to Oscar’s unique talents in electrical engineering, many companies approached Oscar to build prototype transformers and coils. In 1951, Schott became a full time corporation."



SMU1330 Series Drum Core Inductors

High energy storage and low resistance, Ideal for DC-DC step-up or step-down conversion, Reliable surface mounting, flat top for pick and place.

Schott Sales and Engineering
210 St. Olaf Ave, N. Canby, MN 56220, USA.

High-Voltage High-Power IGBT

IGBT module from  Hitachi. The new IGBT module makes high energy efficiency and silent operation of inverters possible. It has High thermal fatigue durability. It is a High speed and low loss IGBT module.

High-Voltage High-Power IGBT

Low noise due to soft and fast recovery diode. The driving power is less as the MOS gate input capacitance is very low. The modules are very reliable and durable. The heatsink has a Isolation between terminals and base.



From 1700V to 6500V,  High Power Density, Low Inductance, Scalable, Easy Paralleling, Standard and High Isolation Package.

The Hitachi Power Semiconductor Devices mark a new era of Power electronics by High-Power IGBT modules, High-Voltage ICs and Power diodes.

Induction Heating - Cooker Project

Single plate induction cooker demonstration board Uses ST7LITE09 and STGW40NC60WD (40 A, W series).

The design is entirely controlled by a simple ST7FLITE09Y0 8-bit microcontroller, which provides the PWM driving signals, communicates information to the user interface, and drives the fan and relay control to the plate feedback.

With Single Voltage Flash Memory, Data Eeprom, Adc, Timers, Spi Active - ST7LITE09Y0 8-Bit Mcu



A single plate induction cooker with the ST7FLITE09Y0 PDF - Excerpt From Application Note above AN2383 Application note -

Put simply, an induction cooking element (what on a gas stove would be called a "burner") is a special kind of transformer.


When a good-sized piece of magnetically conducting material such as, for example, a cast-iron frying pan, is placed in the magnetic field created by the cooking element, the field transfers ("induces") energy into the metal. That transferred energy causes the metal - the cooking vessel - to become hot.

By controlling the intensity of the magnetic field, we can control the amount of heat being generated in the cooking vessel and we can change that amount instantaneously.

Induction cooking functions based on the principle of the series L-C resonant circuit, where the inductance L is the cooking element itself. By changing the switching frequency of the high voltage half-bridge driver, the alternating current flowing through the cooking element changes its value. The intensity of the magnetic field and therefore the heating energy can be controlled this way.



The +325 V DC link voltage is applied through a filter to the upper-side IGBT only when the safety relay is closed and the system is on. Components inside the dotted rectangle are the core part of the power stage: the L-C resonant tank is obtained by the plate (represented in the schematic by a spiral) and the capacitors on the left side.

Induction heating is a non-contact heating process - Richie's Tesla Coil Web Page

The resonant capacitor has been divided in two identical capacitors, so that the amount of current flowing through each capacitor is reduced by half, while the voltage to the capacitors remains the same.