LM1830 low level detector schematic circuit design

This LM1830 low level detector can use an audio indication (speaker ) or a visual indicator (LED- light emitting diode ) that will light when the level is too low. This low level detector circuit will generate a 500 Hz audio signal when the level is low. This low level detector require a 16 V DC power supply and the recipient must be from some m

etal, because you need to connect the ground of the circuit to the recipient.

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