Operational Amplifier Video Tutorial and super microphone circuit with LM324

Afroman goes over the basics of how to use an operational amplifier to amplify tiny voltages, and builds a circuit to listen to very faint sounds with a microphone. For more information about amplifiers, Google inverting amplifier  non-inverting amplifier  instrumentation amplifier  class A amplifier  class B amplifier  class AB amplif

ier  and that should give you a lot to chew on.

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