Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Explain me the principles of squelch circuit

Status
Not open for further replies.

mustang82

Junior Member level 3
Joined
Dec 2, 2005
Messages
27
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Third Rock from the sun
Activity points
1,556
Hello,

I need some help with squelch circuit. Can anybody please give a ckt digram if available or explain me the principle. All I know is that the speaker output in the RX is blocked if there is no signal transmission.

Thanks
 

Re: Squelch Circuit

You can use a level detector for the audio signal (full wave rectifier and comparator) to drive an analog switch. You must have some delay at the level detector so that it will stay open during speech. The circuit I sent you is an exmple of a level detector. Vref is 6V.
 

Re: Squelch Circuit

u refer colour telibision by R R Gulati
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top