Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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

operating frquency of an unknown smps?

Status
Not open for further replies.

ambi

Member level 1
Joined
Mar 31, 2015
Messages
32
Helped
0
Reputation
0
Reaction score
0
Trophy points
6
Activity points
199
hii all, can anyone tell how to find the operating frequency of an unknown flyback transformer?
 

ravi1488

Member level 3
Joined
Apr 21, 2010
Messages
60
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,288
Location
India
Activity points
1,656
You need to find out its turns ratio, inductance of primary and Secondary and wire gauages...
 

ravindragudi

Full Member level 3
Joined
Jan 20, 2010
Messages
172
Helped
51
Reputation
102
Reaction score
51
Trophy points
1,308
Activity points
2,334
I think it will be better if you share more on what information is available with you - so that others can help you faster.

One option is - if you are able to scope out the voltage @ diode in secondary or the current through the diode - all before the capacitor in secondary, you can measure the switching frequency.
 

ambi

Member level 1
Joined
Mar 31, 2015
Messages
32
Helped
0
Reputation
0
Reaction score
0
Trophy points
6
Activity points
199
hiii thanks for ur response :)

i don'k know the inductance because i don'k hav any measuring inst lik LCR, function generator...
py turns: 170 ts, 0.1mm wire
sy turns: 11 ts, 0.3mm wire
auxiliary turns: 11 ts, 0.1mm wire
transistor s 13001

pl help me ot

thanks :)
 

ravi1488

Member level 3
Joined
Apr 21, 2010
Messages
60
Helped
5
Reputation
10
Reaction score
5
Trophy points
1,288
Location
India
Activity points
1,656
First tell me, do you have that transformer only OR you have a whole circuit of SMPS ?
 

ambi

Member level 1
Joined
Mar 31, 2015
Messages
32
Helped
0
Reputation
0
Reaction score
0
Trophy points
6
Activity points
199
Whole circuit of smps...
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top