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Saturday, August 3, 2019

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.

Technical Resource - Marc Dekenah

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

Earthing Practice and Power Quality

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.

Thursday, August 1, 2019

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

Power Electronics Design Methods

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.

Thursday, July 4, 2019

UPS Power Inverter and DC to AC

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

Power Quality Teaching Toy

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."

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.

Sine wave Inverter 800VA

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.