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Power Electronics

Power Electronics and Energy Management

Power Electronics

Here are power supply, inverter, drives, chargers and high current equipment diagrams and links. There are Mosfet and Thyristor  circuits too.


   
Power Supplies, Inverters, UPS, Chargers, Electro Plating, Precision Welding-erosion, Coating Metals and many other Processes are made of high current circuits.  Even in measurement of parameters like Micro-Ohm high currents are involved.  Electronic Circuits are required in such products to give control to time, current, frequency and voltage in order to accomplish with the required precision a process or job.

Solid State Relays or Thyristor Contacters

Solid State Relays or Thyristor Contacters

In any power equipment, efficiency and reduction of bulk is crucial so SMPS and high frequency control is an important part of this domain. These products also generate EMI-RFI. Product Safety Study  is also vital.

EMI RFI Filters and Electrical Noise Control





Design Notes

(These are notes jotted down of my experience in the 90s, it may have spelling and other errors)

SMPS designs should have clear line or patch of isolation for product safety and long term reliability. If you use opto-couplers they need to have 5kV or better isolation and 10mm between pins. The Live circuitry and the output circuitry should not overlap on PCB, tracks should not stray to the opposite side, The Transformers can be split bobbin if possible. A 10 to 20 mm desert (means no tracks) running from end to end of PCB under Transformer and under optos etc., Even ground tracks and ground planes should not stray.

Related Pages in delabs

The high voltage side must have layer to layer (mylar) insulation, means wind a layer and then put the yellow mylar tape, make tape concave so no strands should slip over to next layer, use split bobbin if possible. have terminations far away and enclosed for safety. vacuum impregnate with natural resin or epoxy depending on voltage and environment. product safety is very important.

Mini Power Supply

Power Supplies and SMPS, Transformers, Drive circuits for Motors, Heaters and Solenoids are all Power Electronics. Thyristors, Mosfets and High Power Transistors are important components used in these circuits.




Mains Stability and Supply Regulation


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delabs Technologies

20th Jan 2020




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