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Variac and Other dropper in line

I have a beautiful old variac, with a sliding (rotating) center contact. I would love to use this on a nice LED string inside a glass bulb on top of the device. But also, use the variac as the dimmer, ...
ExploWare's user avatar
  • 140
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1 answer
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Suggestion on Power supply design

I am looking for Transformerless power supply design. I have MCU 5V. and would like to drive 12V/24V relay with single LED. i have 4 pots 10K/200k for timing So i prefer 230VAC to 12V/24Vdc output ...
Ajit's user avatar
  • 25
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Capacitive Power Supply Torch

I'm an amateur at electronics circuitry and concepts. I have designed a simple capacitive power supply using few web images and brief lessons. I understand that this type of transformerless power ...
putu06's user avatar
  • 91