sing this electronic scheme can be made an electronic circuit that
allows a sound indication for a button.The circuit is based on a 7555
integrated timer (CMOS version of the well-known ment 555) is connected
as a multivibrator astabil .His output is a rectangular pulse with a
frequency of 700 Hz, which is used to control a small buzzer.
Pressed Button Sound Indicator Schematic
Pressed Button Sound Indicator Schematic
The
circuit will oscillate be prevented if pin 4 of integrated circuit is
connected to 0 V.
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