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Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

light bulb

  1. D

    Light bulb circuitry

    Hi all, I found a pcb with some components attached in an LED light bulb. The bulb is not a smart bulb as far as I know. Does anyone know what this is?
  2. J

    How to light an incandescent bulb using capacitors?

    I am just learning and playing with electronics and I want to light a bulb with one or more capacitors for a few seconds. The bulb would be 25 watts, 250 Volts. So I would like to know the values of the capacitor that I need and what kind they should be.

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