Electronics > Projects, Designs, and Technical Stuff
weird opamp configuration
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Wolfgang:
Hi,

I would suggest to read some Art of Electronics by Horowitz and Hill. A life with no theoretical skills is a hard life, because you live in a world of unexplainable things. A life without some test equipment (multimeter, oscilloscope, signal generator) is also not funny.

Anyway, learning and experimenting is a lot of fun. But dont guess - understand what you are doing. Success comes much faster.  :)
wraper:
Smartphones have too low output voltage to drive majority of amplifiers at max power. You'd better measure output voltage coming to speakers. Then we could at least assume if overall gain is fine or not.
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