Thursday, October 27, 2011

Doorbell Sound with CD4001 CD4060

Doorbell Sound with CD4001 CD4060
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.When 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.
Advertisement:

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.