Quote:
Originally Posted by oldeurope
Hi daviddeakin, you wrote
Sorry, for my this is very importand.
I am a Radio and TV serviceman, finding and following the signal path is essential to do this work. Instruments like the "signal follower" for example are made to find where the signal path is interrupted.
The aim was to develop a circuit that makes it possible to have only valves say triodes in the signal path. And this is done here.  |
I think we misunderstand one another. In the case of a preamp, we are usually only interested in voltage amplification; the flow of current between stages is usually zero, or of no interest.
Therefore, although you can "trace a signal" through a circuit, all you are really doing is viewing the voltage changes at different points in the circuit- it is a modulated power supply, and nothing more. ALL capacitors in the circuit contribute to the voltages changes at each stage, and therefore ALL capacitors have an audible effect to some degree, even though you "red line" doesn't pass through any.