Doorbell Sound with CD4001 CD4060


Posted on Feb 4, 2014

The doorbell sound circuit was two-tone sound. With the switch S1. working of the circuit, IC1 is a frequency division circuit, and a sound frequency generator came out. by C1, R1 is the frequency generator. This audio signal from pin 7 and pin 4 to pin 1 and pin 8 of the IC2a, IC2c respectively. The IC2b of a frequency converter to control IC2c. Wh


Doorbell Sound with CD4001 CD4060
Click here to download the full size of the above Circuit.

en control signal during the low (Low) 1. 25 kHz frequency coincides with IC2a. At same time, the control signal is in a high state IC2b (high), 300 Hz frequency IC2c parties. Output on pin 3 of low IC2a under the same conditions, production and IC2c IC2a IC2d. Which is sent to act as a signal and the output transistors act as switches Q1 and tones amplifiers. The can be heard as two strokes. R3 acts as a volume, add more value to make the softest sound, but softer, a source of 6 volts.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    ZN414 Portable AM Receiver circuit and description
    flashing-light-uses-triacs.html
    schematic diagram of my geiger counter
    Voice recorder/playback circuit
    LM331 Precision Voltage-to-Frequency Converter
    Secure USB Time-Stamp for Data-Logging
    The contact resistance measuring circuit



    Top