Re: U1 fried

Claude-Alain Baumgartner
 

The TDA2822 obviously can not stand the 12V. After having blown two TDA2822's, I soldered a socket in its place, and made an adapter for the LM386, which never failed at 12V.
Here is the wiring:

LM386 pin:     2  -  4   TDA2822 corresponding pin
                       3  -  7
                       4  -  4
                       5  -  1
                       6  -  2

Very simple and effective.
73's
HB9CGL Claude

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