Tda2822
I hate to dig up and older thread, but this was exactly what I was after.
I have an AM/FM hand held radio that makes use of the TDA2822 amplifier, And I have the same intentions, to run an MP3 output into this device, and power a small 4 or 8ohm speaker.
The speaker is a cheap $6 piece from wall mart for car audio. It could be 8ohm but I think it's 4 ohm.
The only specs are 8 Watts RMS @ 1Khz and 25 watts max.
The radio runs 4.5V
What I would Like to find out from you,
1) Where Do I tie into the existing input for this Amplifier? Can it be done directly to the input or will it need a resistor to step down the input signal?
2)What needs to be done to disable the existing Radio reciever? Can I simply sever the existing input circuit?
The TDA2822 is already bridged according to the schematics I've looked over.
I apologize for any and all short comings. I've never attempted any work like this, only what training i've had for automotive electrical systems.
I'm just learning at this point.
Kyle