솔루션 찾기 기술 지원

Top259en

Posted by: marcelorn19 on

I have one problem in my project.

 

My power supply when start with load the output is 25V and I remove the load and the voltage stay in 25V.

 

If I start the power supply with no load conected the power supply output is 38V and when I put the load stay in the 38V.

 

What is my problem?

 The Bias Waveform amplitude is 32V?

 

 

 

댓글

Submitted by VCastrellon on 10/02/2014

Could you please post your schematic?

Thank you 

Submitted by marcelorn19 on 10/03/2014

This is a current driver

Submitted by VCastrellon on 10/03/2014

I do not understand your circuit. Could you please explain me a little bit about the way it operates.  I am talking about the feedback circuit.  I see three sensing resistors, R6, R9 and R11. But I do not see how are you sensing the output current.

 

I see the inverting input of your op-amp. It is connected to a fixed voltage of 2.5 through the voltage divided made by   R1 and R12. The non-inverting input is connected to the return node. 

 

I am very confused.  Please explain me how it works

Thank you 

Submitted by alex eletronica on 01/28/2015

I have problem with the AC-DC converter using TOP260YN, the source does not turn to put load is removed the load it usually triggers.

첨부 파일 파일 크기
circuit used (425 KB) 425 KB
Submitted by PI-Terry on 02/04/2015

Hi,

Following the discussion that replied by Worf, are you saying there is a new issue? Would you please give a little bit more information that I can further support you?
I am sorry, I do not really understand "the source does not turn to put load is removed the load it usually triggers."