The big advantage of the circuit you have chosen is that it is portable between
different pieces of equipment, just plug it into the headphone jack.
You do need to supply 12v to it somehow, and it needs its own amplifier.
A search for "LM386 Module" will find a very cheap amplifier that should be suitable.
Jerry, KE7ER
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On Tue, May 18, 2021 at 10:59 PM, Michael wrote:
Jerry,
thank you very much. This is most helpful.
I think I'm going to buy AA 143 germanium diodes. Strange that they are 1,35€ each in comparison to the 0,04€ for each transistor.
Will keep you in the loop!
73
Michael
