I am trying to build a 9 volt powered circuit that amplifies an audio signal around line level. The load is one or more LEDs. It must not use any op amps. Preferably one or two transistors. A level pot before or after the transistor is OK.
A stereo line level input. Music coming from an audio mixer, for example.
Look for Vu meter circuit using transistor. It will work.
Sourav Gupta
Joined February 12, 2018 696Monday at 02:11 PM
What is the specification of the input?