I've been trying to get sound out of TDA2822 (8 pins) for about 4 hours now, nothing I tried works. Is anyone familiar with this IC? Only thing I don't have is 4.7 Ohm resistors, I tried 10 Ohm instead. Could this be the issue?
Schematic I'm using is from chip's Datasheet, it's Bridged (mono) version: http://www.unisonic.com.tw/datasheet/TDA2822.pdf
I did get some sound but it's cutting in and out and chip started to overheat at 5V... Any suggestions?
Got it working! I think parallel resistors helped One more question, how do I reduce amplification? I think its giving out 2 watts, while my speaker can only handle .5
Got it working! I think parallel resistors helped One more question, how do I reduce amplification? I think its giving out 2 watts, while my speaker can only handle .5
You reduce the input signal either with two voltage divider resistors or better yet just replace the input 10K ohm resistor and replace it with either a 10K pot or trimmer pot with the wiper feeding the input pin.
Got it working! I think parallel resistors helped One more question, how do I reduce amplification? I think its giving out 2 watts, while my speaker can only handle .5
You reduce the input signal either with two voltage divider resistors or better yet just replace the input 10K ohm resistor and replace it with either a 10K pot or trimmer pot with the wiper feeding the input pin.
Lefty
Thanks, yeah that works! I connected Pot and it reduces volume. Now to figure out how to get rid of all the terrible digital noise I get from my circuit, but that's whole another story