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1khz square wave generator circuit schematic

1KHz Square Wave Generator Circuit

You can build a simple 1KHz square wave generator using a few components and the LM3909 that is useful for testing audio equipment. It is powered from a single 1.5V battery cell and the maximum amplitude of the output signal is 1.1V. With P1 you can adjust the symmetry of the square wave signal and with P2 the amplitude.

Square wave generator schematic

1khz square wave generator circuit schematic

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