65535
Flashlight Enthusiast
I had a nice post almost done and my laptop crashed when I took the pic.
Anyways, that is my flashy light thingy.
It's 10 led's, 5 per channel attached to the output of a stereo amplifier.
The led's are 4 white spider type 4 blue spider type and 2 red high flux spider type.
The led's are divided into two banks, one for the left audio channel and one for the right. the 5 leds are white blue red blue white the blue.
The white and blue led's have the same power specs and are wired in series the red are lower voltage and about 3 times the current have their own leg of the circuit.
In order to keep the amp from going into protection and to keep the led's happy a pair of bridge rectifiers takes the ugly AC power and rectifies it to DC which keeps a constant load on the amp and keeps the led's from getting blown out with reverse voltage.
As you may have guessed the louder the music the brighter the leds. It's far more complicated than just loudness as different frequencies require more push to reproduce by speakers so a higher voltage.
In general my system is simple Amp output stereo are two channels so to get a left and right signal you need a dual circuit.
Amp
Full wave bridge rectifier
positive side of DC leg
50 Ohm resistor 180 Ohm resistor
4 led's in series single red led
negative side of DC leg
The circuit branches on the board for the different LED requirements.
It's pretty cool and looks cool when running.
BTW my amp puts out roughly 12 volts peak.
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