View Single Post
  #4   Report Post  
Posted to sci.electronics.repair
Franc Zabkar Franc Zabkar is offline
external usenet poster
 
Posts: 1,569
Default SMPS: I'm Topologically Challenged

On Sat, 13 Dec 2008 14:34:43 +0000, Joe McElvenney
put finger to keyboard and composed:

I'm in need of a pointer to a couple of representative circuits so
that I can get my brain around the particular configuration used in
the SMPS I'm working on.


The service manual for this TV chassis has an in-depth discussion of
how its SMPS works:
http://www.eserviceinfo.com/download...CA_CTC203.html

The SMPS consists of discrete transistors and an optocoupler for
feedback. Regulation is achieved by monitoring the current in the
primary winding and turning off the chopper when the current rises to
a level determined by the feedback voltage from the optocoupler.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.