Reply to post: Re: Ré causing, not curing chaos

PC lab in remote leper colony had wrong cables, no licences, and not much hope

Doctor Syntax Silver badge

Re: Ré causing, not curing chaos

"The idea was to try and do away with the circuitry and expensive transformer required to step down from 240v to 5v by using ultra low current devices and a simple resister to drop the unwanted 235v."

I took apart a defunct PIR detector. The power supply? A bridge of 1Nsomething-or-other diodes, a fractional watt resistor, a capacitor and a zener.

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