NO-NC SSR Plastic Box
2020-07-02
This was a Fire Retardant Plastic Box which was made for the SSR I/O Stackable Modules. DC Control for an AC Load. Usually it is to control another Big ThreeRead More
SSR and Transmitter Enclosure
2020-06-08
This is the safe enclosure for the Encapsulated Mini RTD PT100 Transmitter and was first made for the Electronic Relay with no moving parts, The Solid State Relays – SSR. Potted,Read More
555 multivibrator like power oscillator
2019-09-06
This is dual 555 multivibrator like power oscillator. This is my contraption and conception but couple of decades old. It appears to have errors. It worked but the document fixingRead More
Facts of EMI and RFI from the Inside
2018-06-25
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
PCB SSR Module – IO Module
2018-01-24
This is a PCB Mount SSR for Control of a Small AC load like a Lamp or a Contacter. It has Optical Isolation and has a Thyristor for output. ThisRead More
EMI RFI Mains Power Filters
2017-09-04
EMI RFI Noise Filters are required in two situations, to prevent EMI from an Electronic Equipment Like A Dimmer, Thyristor Drive, SMPS or Switcher affecting other Modules in a SystemRead More
Mains Voltage and Power Circuits
2016-10-14
Mains Power means the 230 V AC 50 Hz or 110 V AC 60 Hz in some countries, The lower power line like 5A is used for small lamps andRead More
Earthing Practice by Trevor Charlton
2016-03-21
“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