Multi-channel audio Mixer LM3900
A simple multi-channel audio mixer circuit using quad LM3900 amplifier is given below. The circuit is composed of quad 4 channel amplifier (LM3900). two microphone audio inputs and two direct line inputs are offered in this circuit. Adding parallel circuit constant with this, you will be able to increase the amount of entries according to the applications.Each input is connected to the Inverting
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