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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.

Fading Circuit?

flydog

New Member
Does anyone have a design for a circuit that would cause approx 20 3v LEDs to start out bright, then fade out once the power was cut?

Yes I'm new here and am trying to figure out a special effect for a theatrical scene.

thanks
 
A big capacitor across the power supply to the LEDs will do that.
 

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