A very old "relaxing" audio amplifier project with an input powered from
+/-12VDC (SLA batteries). The audio signal is sent through an OPA2134
preamp and then to a BD135/BD136 power stage. With zero bias current,
it relies entirely on feedback!
Zero-Bias Current Class-AB Audio Amplifier
David Scholten wrote 09/02/2021 at 07:14
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