mstechca
New Member
I want to convert audio at normal volume to LED output using only transistors (NPN or PNP), resistors, and/or capacitors. I have looked at the "Stereo VU meter" circuit from talkingelectronics.com and the problem is that the response from the LED is dim. It seems to pick up the signal, but the response is so dim, I could hardly see it with a 4000 MCD LED. a 4000 MCD LED lights brightly and almost blinds you when 6V is applied to it.
I want to see the LED go to maximum brightness in response with the signal.
Is there a simple circuit I can use to resolve this?
I am using TIP31 and TIP32 transistors. Are there more powerful transistors I can use or does that not solve the problem?
I want to see the LED go to maximum brightness in response with the signal.
Is there a simple circuit I can use to resolve this?
I am using TIP31 and TIP32 transistors. Are there more powerful transistors I can use or does that not solve the problem?