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.

Register Log in

Unloading Problem in Secondary Winding of a SMPS

Status
Not open for further replies.
M

moataz fouad

Member level 1
Joined
Sep 25, 2007
Messages
36
Helped
10
Reputation
20
Reaction score
10
Trophy points
1,288
Location
Egypt
Activity points
1,489
Dear all,
I've an AC-DC SMPS with 2 outputs, one +12V regulated, stable output & another +15V unregulated stable output; the problem is when the +15V output is unloaded, the output goes up to 30V !!
Any clue why this happens & how to solve this problem ??
Thanks in advance.
 

Last time i faced by this problem , i survey circuit and see that my circuit haven't a good feed-back and this caused by ill rectifier capacitor(after double diode) .
 

But the problem is not in the output with feedback (+12V), the +15V output doesn't have any feedback, it depends on the ratio between the 2 winding.
Thanks.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top