Pic's of my pocket amp
- Thread starter ppl
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| Originally Posted by kopfhorer |
I am a diyer in China.
some PPA concepts can be found in this design,cool
but I have the some questions in the schematic:
1. what is the function of the R8 which isolate the input ground path from the virtural ground?
2. what is typical value of the constant current which bias the opa into class A mode? 1ma or 4?
3. According to schmatic, the virtural ground generated from TLE2426 and the output ground derived from EL2001 are tied together at the EL2001's output.
I think it violents the design purpose of the virtural ground.