A project log for LED strip flashing to music

Simple circuit for light show

mattkomattko 08/12/2014 at 18:342 Comments

I made some changes to the circuit for the better. If I feed clean sine wave of maximum volume from the computer, 250mA AC flows through LED's. They draw 1,2A of current connected to 12V. If I connect 5V to the base of the TIP102, LED's draw 560mA of DC.

So there is still room for more brightness. This is current circuit:


rawe wrote 08/12/2014 at 19:11 point
The middle transistor looks like it is meant to be a PNP type?

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mattko wrote 08/20/2014 at 09:26 point
No, my mistake. Fixed.

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