Sci.Electronics.Repair Frequently Asked Question(s) (or S.E.R FAQ for short) Home Page. This site features Samuel M. Goldwasser’s latest and greatest “Notes on the Troubleshooting and Repair of…” series of comprehensiveRead More
Good Earthing or Grounding is needed for Human Safety it also Prolongs Appliance Life. Earthing in the olden days was done like this, i have just mixed what i haveRead More
Low Frequency Power Transformers are used to step down mains voltage of 230V or 110V to safer voltages like 12V and 6V. The core is made of laminations of aRead More
Series and Parallel Transformers Series and Parallel Connections in transformers. Observe the Dot-Polarity. When windings are in parallel the current capacity doubles. When windings are in series the voltage doubles.Read More
Electromagnetic interference (or EMI, also called radio-frequency interference or RFI when in radio frequency) is disturbance that affects an electrical circuit due to either electromagnetic induction or electromagnetic radiation emittedRead More
Electrical Engineering encompasses Everything in Electronics. Communications, Computers etc. are further specializations of Electronics. So it is best to Identify Electrical Circuits with Electrical Designs which excludes Active Devices. ItRead More
“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 plugsRead More
Supplementary to EMI/RFI/EMC Immunity of an Equipment. Many Installations are subject to Highly Disruptive Electrical Environment not just EMI. Depending on the budget and the situation a solution has toRead More