This is a simple circuit which produces a sound similar to the police siren and is built using NE555 Timer. Two 555 timers act as an astable multivibrator. Here is the simple circuit designed to ...
The 74LV123 is a low voltage dual retriggerable monostable multivibrator with reset. This device is retriggerable for very long pulses up to 100% duty factor and it has direct reset that terminates ...
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