Dominik Workshop

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@albertsekyr8759 14 күн бұрын

Very nice work 👏! Congratulations

@dominikworkshop6007 13 күн бұрын

@@albertsekyr8759 Thank you! :D

@TheExplorer.. 23 күн бұрын

Thanks alot Man

@agunghartama9382 28 күн бұрын

Can i replace BD249 with 2N3055? Because i cant found BD249 in my town

@dominikworkshop6007 28 күн бұрын

Yes, it should work.

@agunghartama9382 27 күн бұрын

BD912 that u mention in github for stability, can i change it with TIP2955? They are BJT to, coz so dificult to find BD912, for electrical datashet they are close each other (BD912 and TIP2955) CMIIW

@stephanc7192 3 ай бұрын

Great project Thanks for sharing

@dominikworkshop6007 3 ай бұрын

@@stephanc7192 Thank you!

@sethysett_a 3 ай бұрын

Would this be similar with the HM6264 SRAM IC?

@dominikworkshop6007 3 ай бұрын

Yes, it looks like it would work pretty much the same way.

@sethysett_a 3 ай бұрын

@@dominikworkshop6007 Alright, thanks!

@mezzofresh3521 3 ай бұрын

Dude your awesome. I just got a similar chip and now thanks to you,I can have fun with it

@dominikworkshop6007 3 ай бұрын

@@mezzofresh3521 l'm glad I could help

@cyklop1977 4 ай бұрын

Thx

@OmarElmasry1 5 ай бұрын

this is a really good video thanks a lot

@dominikworkshop6007 5 ай бұрын

@@OmarElmasry1 Thanks, I'm glad you enjoyed it!

@rompipelotas 5 ай бұрын

i cannot find the schematics...????

@dominikworkshop6007 5 ай бұрын

github.com/Dominik-Workshop/Electronic_load/tree/master/pcb/pcb_main

@rompipelotas 5 ай бұрын

@@dominikworkshop6007 THANKS !!!!

@MarcelHuguenin 5 ай бұрын

Beautiful design and functionality.

@dominikworkshop6007 5 ай бұрын

Thank you!!!

@qbas060 6 ай бұрын

Hi, I've been working on my own load for testing Li-Ion/Li-Po battery packs for a while now and your project caught my eye. I would like to use some of the solutions but I am very curious why the LM4140 reference voltage circuit is used? Basically it only supplies the DAC, but there is a huge voltage divider at the output: 10k/560R. So the voltage range going into the amplifier is only 0-217mV? Am I understanding this correctly? I wonder what the point of this is, as the voltage in the amplifier is boosted back up to a maximum of 5V

@dominikworkshop6007 6 ай бұрын

Hello! The LM4140 was chosen for its outstanding stability, particularly due to its low temperature coefficient. Since the DAC's output depends on the supply voltage, ensuring a very stable reference voltage is crucial for consistent performance. The DAC needs to operate within a supply voltage range of 2.7V to 5.5V, which necessitates using a voltage divider to limit the output voltage range, as you correctly observed. The reason for setting the output voltage range to 0-217mV is that this reference voltage is compared with the voltage across the 0.1 ohm shunt resistor. When the reference voltage on the non-inverting input of the U1 amplifier reaches 217mV, the corresponding current through the shunt resistor would be 2.17A (for one power stage, there are 4 of these in parralel). Hope it clears things up, and that I understood your question correctly.

@qbas060 6 ай бұрын

@@dominikworkshop6007 That is exactly what I meant and thanks for the reply. I've done some simulations and with your explanation and the schematic provided (and some information from SW) I will use a very similar mosfet gate control. Your projects are brilliant, keep up the good work.

@grzesiek1x 6 ай бұрын

So the 5 V regultors are for voltage reference for opamps right? What about stability of the outpout with a big load? How much your outpout voltage drop let's say at 2 amps current for example?

@dominikworkshop6007 6 ай бұрын

Yes, the 5V regulators are currently used as voltage references for the op-amps. However, this is not the most optimal design choice. Using a dedicated voltage reference like the TL431 could provide better precision and stability. After replacing the P-MOSFET with a BJT, the output has shown stability even under heavy loads. More details on this change can be found in the README file on the GitHub repository. While I haven't precisely measured the output voltage drop at a 2A load, I estimate it to be less than 10mV. As demonstrated in the video at the 5:39 mark, there's no noticeable drop in output voltage even at a 3A load.

@grzesiek1x 6 ай бұрын

10 mV is very good as with common l317 and simple design it can drift (at least in my case) about 180 mV or something in both ways which is quite annoying while charging LiPo batteries 🙄 I have to monitor the current all the time...

@samuelgift6889 6 ай бұрын

I found it difficult to understand the usage of opAmp but your schematic made me break the barrier. Although am not yet saturated with opamp.. your project help so much

@dominikworkshop6007 6 ай бұрын

@@samuelgift6889 I'm glad to hear that!!!

@samuelgift6889 6 ай бұрын

Thanks you for sharing your work

@samuelgift6889 6 ай бұрын

Thanks

@eboy536 6 ай бұрын

Great job 🎉

@dominikworkshop6007 6 ай бұрын

@@eboy536 Thank you!

@stanislawi.4610 6 ай бұрын

beautiful work

@dominikworkshop6007 6 ай бұрын

@@stanislawi.4610 Thank you!

@monstereat90 7 ай бұрын

hey, i have already see your github, wonderful work man👍. I want to ask some question, in your Electronic_load.txt file there is a component with the prefix name U$2, I search everywhere on your 3d models but i can't find it, can you tell what component is that?

@bflmpsvz870 7 ай бұрын

Very nice

@dominikworkshop6007 7 ай бұрын

Thank you!

@sergioalejandrogonzalez9755 7 ай бұрын

Terrific good looking DIY project, really neat. Congrats and thank you for sharing.

@dominikworkshop6007 7 ай бұрын

Thank you!

@lmwlmw4468 8 ай бұрын

Great work...!!!

@dominikworkshop6007 8 ай бұрын

Thank you!

@Sebasaper 8 ай бұрын

Mała uwaga dla budujących kupiłem tranzystory bc639 i nie działało po dokładnym sprawdzeniu okazało się że tranzystory mają inne wyprowadzenie Pętanie do was panowie czy można podwoić wszystko i zbudować zasilacz w kanałowy i ewentualnie łączyć kanały aby zwiększyć napięcie ? Czy będzie zwarnie przez Arduino jeśli tak jak to rozwiazać

@dominikworkshop6007 8 ай бұрын

Można zrobić wielokanałowy z możliwością łączenia szeregowo, ale tak jak piszesz, controll board by to zwierał. Rozwiązać to można by było stosując izolator I2C do przetwornika ADC, i mieć połączenie między płytkami tylko przez I2C. (zasilanie ADC też nie może być brane z controll boarda oczywiście)

@TS-hx4ts 8 ай бұрын

Amazing!

@stuchump6618 8 ай бұрын

excellent job. You should have more views and subs. Keep up the great work

@dominikworkshop6007 8 ай бұрын

Thank you!!!

@avmusic7525 9 ай бұрын

There is no BOM file in github, sir

@Mattia-os2qz 9 ай бұрын

Hi! Great video and amazing project, very interesting. I would like to ask you for an explanation: I struggle to understand the function of the P-channel mosfet and how it decreases/increases the output voltage

@dominikworkshop6007 9 ай бұрын

Thank you! When the voltage on the P-channel MOSFET's gate decreases, it starts conducting, thus increasing the output voltage.

@Shyamkumar-di5fu 9 ай бұрын

Please make a video about 16bit adc voltage current measurement..

@ΒαγγεληςΔερδελης 9 ай бұрын

Good job thats a nice design! Can we get more details from the current limit circuit because im trying to build something similar and im having trouble

@dominikworkshop6007 9 ай бұрын

Thank you! What exactly do you want me to explain in more details? What probelms do you have?

@raghavendramayya9902 10 ай бұрын

Good Project, Can you explain how ADC is designed and working and explain working of electronics similar to your Power supply design explanation.