Wheelie016
- Nov 20, 2012
- 10
- Joined
- Nov 20, 2012
- Messages
- 10
I want to build a LED Color Organ using OpAmps and some passive filters. I was just wondering if the circuit I have "designed" would work. I'm fairly new to OpAmps, but I have learned a lot from the good ole interweb. I'll add a schematic as soon as I can, but until then I'll describe it as best I can.
First I'll have the audio signal go through a low pass filter with a cut-off frequency of 361 Hz. The component values are 200 ohms for the resistor and then 2.2 uf for the cap. Then the signal will pass through a LM386 powered by 5v and in a non-inverting format with a gain of 3.1 using 10k and 4k7 resistors on the negative feedback loop. After that it just goes through a standard diode and resistor in series to a transistor that lights the LED's.
So given that terrible description, would you think it work? Or am I at least in the right direction? Advice would be much appreciated. And again I plan on adding a pic as soon as I draw a decent one.
First I'll have the audio signal go through a low pass filter with a cut-off frequency of 361 Hz. The component values are 200 ohms for the resistor and then 2.2 uf for the cap. Then the signal will pass through a LM386 powered by 5v and in a non-inverting format with a gain of 3.1 using 10k and 4k7 resistors on the negative feedback loop. After that it just goes through a standard diode and resistor in series to a transistor that lights the LED's.
So given that terrible description, would you think it work? Or am I at least in the right direction? Advice would be much appreciated. And again I plan on adding a pic as soon as I draw a decent one.