Introduction: How to Make a Fading Light Circuit
Step 1: Parts
9 volt battery led and a capacitor
Step 2:
Step 3: Done
Power it up and remove one of the battery wires and it will fade off

Participated in the
123D Circuits Contest
4,318
20
5
9 volt battery led and a capacitor
Power it up and remove one of the battery wires and it will fade off
Participated in the
123D Circuits Contest
5 Comments
7 years ago
I think this needs more detailed instruction
8 years ago on Introduction
ok, so does this get wired in parallel?
Reply 8 years ago on Introduction
the capacitor and the led
9 years ago on Introduction
9 volts may kill most LED's instantly! Use a current resistor for .20 ma at the LED voltage.
Resistance = Vin - Vled / .02
Red and yellow LED's need only 1.5 to 2 volts. Bright LED's can use up to 3 volts.
9 years ago
one step short of a flashlight. a "breathe" effect would be more useful.