Im trying to implement a recovery clock signal from a bi-polar return to zero signal.................for that purpose im using three comparators............the first one is LM108 which simply gives a high output when non-inverting input is higher than inverting one................................LAter on , 2 other comparators are used in a cascaded ORING configration ..............The resultant or the ORRED output from these two should be a clock signal as per my knowledge.......but im getting simply a high signal.......1,1,1,1,1 so on

Can anybody suggest me any changes needed in my circuit.can anybody explain me wat actually be the final output look like...............im so confused over it

Im trying to do its simulation at circuit maker,.....can anybody suggest me what siurce is available in its library to generate a BPRZ signal

Thanks

 

It will help if you post a schematic please !

 

i have uploaded the schematic for my design of clock recovery with the name of UNTITLED..image............plz chk it......is this circuit correct for implementing clock recovery

 

Here is a simple clock recovery circuit:

 

Are you looking for something like this circuit?

http://ip.com/patent/US5465268

 

You could rectify the input voltage with two opamps. The circuit in the picture does not consider any DC-Offset that might exist at the input nor voltage levels etc. Depending on the input/output voltage you have/want, you may need to adapt it with additional TTL/CMOS or CMOS/TTL converters.

It may also show some unexpected behaviour with high frequencies...

 

where can it be found?

 

i have uploaded the schematic for my design of clock recovery with the name of UNTITLED..image............plz chk it......is this circuit correct for implementing clock recovery

Is this the same subject from your thread "implementing clock recovery signal from BPRZ signal" ?

If yes, please stay in ONE thread, no point in having multiple threads open on the same problem.

What about the circuit in post #6 ? Doesn't simple rectification of your signal do what you want?

 

Hello,

I merged the threads.
The posts are in time line apearance.

Bertus

 

Is this the same subject from your thread "implementing clock recovery signal from BPRZ signal" ?

If yes, please stay in ONE thread, no point in having multiple threads open on the same problem.

What about the circuit in post #6 ? Doesn't simple rectification of your signal do what you want?

yes its working.thanks