Using FET 2n3819 simple audio mixer circuit

  
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This circuit, a simple mixer circuit. It can mix two signal channels and one channel is output. Using a codec circuit, Convert stereo audio to mono audio time. It can increase the number of channels too. By adding a VR1, R1 and C1 to the amount needed. Then connected to Buffett a new one. Most importantly is eating circuit current is very low. Can use
Using FET 2n3819 simple audio mixer circuit - schematic

with 9-volt batteries immediately. When entering voice signal, one of input 1 and input 2. Audio is via C1 and C2 of each channel, served coupling signals to VR1 and VR2. To adjust the audio to the Fet Q1. Which it serves, including audio. Then expand signal the output pin S through C3 For coupling signal again, before leaving to the output.



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