DIY Powerful variable power supply R48 - 2900 Modification

[@dieuquach1006]

Cảm ơn bạn rất nhiều đã chĩa sẻ

[@24Amfa]

Благодарствую тебе, добрый иностранец! Несколько дней искал информацию, как изменить напряжение на R48 2900U(новая версия с одной платой). Работает.

[@СергейСобянин-х4к]

Привет. Получается на выходе только напряжение регулируется, а токи остаються?

[@24Amfa]

@@СергейСобянин-х4к Ток ограничивается нагрузкой. Чтобы сделать ограничение максимального тока, надо найти делитель напряжения с шунта и впаять подстроечник туда.

[@taha1990ish]

Потенциометр на сколько? 22 ком?

[@24Amfa]

@@taha1990ish Подбирайте, я не помню.

[@laurentfievre5652]

Congratulations Have you any information for the R48-3000 Emerson model? I m interested to know how to modify it Best regards Laurent

[@congthanhnguyen7957]

How to change "A" this source?

[@aneespi4684]

Any modifications for controlling current? Also the speed of fan is annoying.....

[@northdeamon]

have you got any solution of theese problems ? also need to regulate current on my R48-1800 ....

[@aneespi4684]

@@northdeamon not yet

[@АндрійСамійленко-р1е]

​@@northdeamon який у вас блок якшо емерсон R48-1800 з буквой. а вконце то можно переделать регулировку наприги от 5 вольт до 59 це максимум дальше уходе в защиту ригулировка тока тоже от1 А до 32А можно зделать практически лабораторний блок питания

[@hamradio599]

I have one but I hate it. The fan noise in standby mode is really too loud. It's good if you can tell us how to improve it.

[@learnwithjohnny4641]

Hi brow how can I make this type of coil? To test this type of load and motor also?

[@thevabhas7225]

This power supply can be used welding work..sir..

[@tabletoptech2755]

Yes it can

[@wahabboutouis]

hello, how to modify the r48 2900u thank you in advance

[@Justa_Real]

Hi, What is the resistance value of potentiometer you have used? Thanks

[@tabletoptech2755]

its a linear 22k potentiometer

[@jayjaynet]

Hi friend, I have a R48-3200 and the board looks almost the same as yours, but it blew a component today. Could you look at yours and tell me which component it is? At 2:46 of your video, it is located under the heatsink of the top-left (close to the two brown capacitors), between the two mosfets on that heatsink. It's written C123NA on my board. Best regards, JJ.

[@yassinali1975]

Hello friend did u found an answer to your question ??. I also have the same issue

[@jayjaynet]

@@yassinali1975 No friend, I've bought an R48-3500e but the board is different, so I can't use it as reference.

[@Dinesh-Bhardwaj]

can you share me image so i can tell you?

[@АлексейШаруденко-ъ5м]

Hi. Can you tell what value of C615? My PS grows voltage from 0 to 48V in approximately 1 minutes. I think it's defect.

[@Hhtfvhrcbgrejkkjhffvbhb]

How to make load? It's 100amp use

[@سعيدحواصلي]

شرح ممتاز

[@tolakangin2042]

Can make to lower voltage? Like 12v?

[@24Amfa]

Take resistor 500 Ohm

[@herutjahjono7483]

@@24Amfa what mean take resistor 500ohm, which resistor?

[@ricardopessoa3793]

Hi, I was thinking of by one of this and doing your modification. Do you have schematics for this power supply? Thanks, very nice idea! Ricardo

[@tabletoptech2755]

Sorry don't have schematics

[@k0x024]

hi, where to buy a power cord for this connector?

[@tabletoptech2755]

i am using C7 power lead , you have to slightly modify the connector by splitting it from centre

[@electronics_engine]

Hi, is that R625?

[@Dinesh-Bhardwaj]

R621

[@Hhtfvhrcbgrejkkjhffvbhb]

How to buy 48v/54v smps module pcb and components.

[@tabletoptech2755]

you can buy it from Ali express ,see link in video description

[@sijosolar3942]

I have call or whatsapp [phone]

[@martinomalle6415]

Hi good job, any idea how to modify the 2000 series for variable voltage? R48-2000e, will be grateful for that tips. Thanks Martin

[@nurilyc1utc983]

I have same R48-2000E, but still have problem which resistor should be replaced for adjusting the voltage. Help me please.

[@АндрійСамійленко-р1е]

​​@@nurilyc1utc983 привет шоб регулировать напругу на блоку емерсон R48-2000e Резистори R315 нада випаять и впаять 100 ом постоянний резистор R319 нада випаять и підпаять переменний на 100 кіло ом Тогда буде ригулировка напрежения от 5 вольт до 59 це максимум дальше уходе в защиту шоб ригулировать ток нада випаять резистор R340 и впаять замес него постоянний на 50 ом R339 нада випаять и підпаяться на его место резистор переменний на 1 кіло ом Тогда буде ригулировка тока от 1 А до 32 А

[@w.dkalyan6234]

Hi🖐️ friend your videos is so much useful to creative peoples like me and our subscribers friend if you don't mine i want some information about this SMPS inside components because i buy this SMPS in scrap but some components ar missing in side like transformers and cooling fans i collect this SMPS before pealing the all parts so it was clean and don't have any breakages friend please help to me to solve my request

[@w.dkalyan6234]

Friend please don't forget my request plz

[@TEGARAgus-bh5cm]

Cex harga om

[@Dinesh-Bhardwaj]

I can help you