Chime Circuit with 4049

  
Resistor R1, capacitor C1, and two converters form a square wave generator, which produces the basic tone. The generator is sui followed by an inverter which serves as both a buffer and a driver for the President. The resistor R2, which has a minimum value of 100 ohms, limits the power and volume controls. The diode D1, capacitor C2, resistors R3 and R4, and two in converters to create the pulse generator which determines the power-up and decay times of the ring.

Chime Circuit with 4049 - img1

The circuit formed by decomposition of D2, C3, R5, and Q-reduces the amplitude of the carillon exponentially with time.




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