One-Way Voice-Activated Intercom Circuit


Posted on Aug 16, 2012

An omnidirectional electret microphone can be used to pick up the sound and convert it into an electrical signal. The output of the microphone is fed along two paths. In the first path, the signal is sent to the inverting input at pin 6. In the second path, the microphone signal is fed to the non-inverting input of U2,


One-Way Voice-Activated Intercom Circuit
Click here to download the full size of the above Circuit.

where it is amplified and output to the speaker, SPKR1.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

FM Radio Jammer circuit diagram Circuit Schematic With Explnation
Dynamic Microphone Preamp
adjustable current limiter circuit
avr usb slideshow presenter.
SSB
automatic dual output display circuit diagram
The NOT gate
Electronic Circuit Schematic DC Motor Driver using L293D Dual H-Bridge
Using several resistive and capacitive phase shifting trigger circuit



Top