EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: ricko_uk on June 10, 2020, 04:56:36 pm
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Hi,
I have an audio input signal coming in from either a signal generator or a line-level audio source (MP3 player etc). It then needs to be sometimes amplified and sometimes attenuated. The output then needs to be able to drive various transducers: sometimes speakers and sometimes custom linear actuators (inductive types).
I only have single supply on the PCB so I came up with the attached schematic.
The output sometimes needs to be AC coupled and sometimes it needs to ride on top of a DC offset that is half of the supply voltage. That is the reason for the jumper at the output.
Is that a good way to do it?
Thank you :)