Comments on: What Voltages To Expect From The Secondary Output Of SMPS? https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/ Semiconductors, Test Equipments, Circuit Board Troubleshooting, Electronic Repair Courses and Many More! Fri, 31 Jan 2020 06:52:51 +0000 hourly 1 https://wordpress.org/?v=5.4.24 By: Jestine Yong https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-365725 Fri, 31 Jan 2020 06:52:51 +0000 https://www.jestineyong.com/?p=1798#comment-365725 In reply to Boyd Nyirenda.

Hi Boyd,

It could be caused by many factors, such as bad resistors, capacitors, fets, power IC, shorted primary winding and etc. I suggest that you read this link to get more repair ideas of power supplies.

Jestine

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]]> By: Boyd Nyirenda https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-365709 Thu, 30 Jan 2020 07:47:38 +0000 https://www.jestineyong.com/?p=1798#comment-365709 Hi Jestine, I have a crt philip TV and after doing some troubleshooting, i found that there is only 1.4v from filter cap but with for rectifier diode on the same primary side the Ac voltage am getting 102v and no voltage on the secondary side of the board. What could be the problem?

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]]> By: Jestine Yong https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-103275 Sun, 22 Jul 2012 02:22:27 +0000 https://www.jestineyong.com/?p=1798#comment-103275 In reply to nanhe.

Hi Nanhe,

Sorry no info on this.

Jestine

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]]> By: nanhe https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-103193 Sun, 22 Jul 2012 00:29:08 +0000 https://www.jestineyong.com/?p=1798#comment-103193 how can change any moniter oseletion friquncy 30k to 25k  with adde any component for use in fanuc cnc  
 
 
                                                                                                                                       nanhe (india)
 

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]]> By: nanhe https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-103177 Sun, 22 Jul 2012 00:10:02 +0000 https://www.jestineyong.com/?p=1798#comment-103177 rispected sir 
 sorry for my poor english im from india i am reguler reed your electronics news  iam fesing a problum can you solve my problum i need  to change one indestreal crt moniter to lcd moniter but converter box(xvga box) not avalebal in india how can got it plese help
                                                                                                                                               nandu (india) 
                                                                                                                                      mehtananhe@rediffmail.com

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]]> By: admin https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-16908 Mon, 04 Jul 2011 10:48:34 +0000 https://www.jestineyong.com/?p=1798#comment-16908 HI Pradip,

Since I'm not a smps designer, thus i suggest that you either visit the designer forum or download many smps schematic and begin to analyze the circuit especially the circuit that have the feedback using optoisolator IC.

Jestine

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]]> By: Pradip https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-16508 Sat, 02 Jul 2011 17:58:57 +0000 https://www.jestineyong.com/?p=1798#comment-16508 we design 24V/3A SMPS,but Output Voltage is Vary from 22V to 28V so
what can I do for regulate to this volatage at 24V exactly

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]]> By: admin https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-10336 Thu, 02 Jun 2011 20:45:28 +0000 https://www.jestineyong.com/?p=1798#comment-10336 HI Eric,

You are welcome!

Jestine

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]]> By: Eric Smith https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-10309 Thu, 02 Jun 2011 14:50:03 +0000 https://www.jestineyong.com/?p=1798#comment-10309 Thanks Jestine this information will go a far way in helping me to repair SMPS

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]]> By: admin https://jestineyong.com/what-voltages-to-expect-from-the-secondary-output-of-smps/comment-page-1/#comment-5878 Wed, 23 Jun 2010 00:27:30 +0000 https://www.jestineyong.com/?p=1798#comment-5878 HI Nejib,

I believe the word "Control" to is trigger the power supply to turn on when the control wire is shorted to ground. I can't confirm on that because i do not have this complete system.

jestine

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