HIGH POWER 0-25V 0-15A adjustable power supply

[@jongjava8743]

Da best explanation of TL494. Simple and clear. You make hard stuff became easy stuff to explain. Broke TO220, to new part. You are awesome, man.

[@Philip8888888]

Mind blown on re-packing the transistor!

[@electronicpower1826]

Well.... no look at the RDSon of them when she is messuring them 0,7 Ohm! if she put there 15Amps there will be power loss almost 80 W on each tranzistor. They would burn instantly

[@Norbydaner]

​@@electronicpower1826she is only the narrator for english 😃 Who made the video i think is a slavic probably russian man 🫡

[@electronicpower1826]

@@Norbydaner looks Like it 😂

[@AmplifierWorld]

What a great video, very impressive, I have no words to describe

[@Deep_Thoughts99]

The long awaited and searched video, thanks

[@saveearthsavenextgeneratio5810]

MY FAVOURITE Channel KASYAN TV.

[@SundayOwens]

I need circuit diagram

[@carrizzle9586]

Great Video! This is a Buck Converter build for those of you that were looking for a Boost converter. I was looking for a Boost converter. Lol

[@rudanimukesh]

Yes, No Word To Say For Your Excellance, it is a perfect working also i made this and create some of changes for protact high voltage from input output side make a fix voltage with register and zener and fix amp for charge the battery like a mppt and put one more protaction for cut the battery current from 10% charge amps to 1% when battery voltage rise 14.2 till 14.4 charge with like 0.4 amps i have no any word to say about your expiriance you always make perfect circute with all of calculation and risk fres god bless dear my last feedback for you circute a buck convert a voltage from 15 to 90 volt with 10 amp to 50 amp and protaction of high and low side with lighting protaction revers polarity protaction and display it with i2c input support up to 700 watt low side outside voltage fix 14.4 and 50 amps and it 98% efficiancy support no west energy. in 700 watt minus 2% energy lost max 20 watt of pcb heat and 10 to 15 watt lost of cabble resistance finaly out 45amp need 45x14.4(out)=648 watt for dirext use home load with 750watt pure sine wave inverter 200 amps battery charge on day sun time in 9 hour by 20amps thankes

[@Sekhar_Home]

Hello boss. Pls replay.. i need that circuit. I created with the given circuit but not got sucess .my output is there but no voltage change when changing the pot. What problem pls

[@gregsmith2262]

Thank you for another excellent video, always the best circuits!

[@ramana778-u5m]

Excellent video and a very good presentation. God bless you dear!

[@lucgauthier3201]

Thank you for your videos, it’s very interesting. I learn a lot with you. I encourage you to keep doing interesting videos like this !

[@attilagergely6734]

The input voltage range is up to 30v this means that if the ic switch to the ground (pin 8,11) between G-D the tension is higher then the maximum 20v this kill the MOSFET

[@sonmai3526]

I noticed that, was going to comment.

[@opinair]

Zener diode is a must

[@opinair]

It is possible to use n chanel mosfet using charge-pump capacitor

[@opinair]

Attila....new subscriber lol

[@ΠάριςΑζής]

Correct remark.

[@deepwidedarklight]

The interference ( 15:29 ) is actuality coming from the power supply itself. This is a Switch Mode Power Supply (SMPS) , they produce a lot of noise.

[@kaumohlamonyane272]

That app is utterly amazing 😍

[@7c3c72602f7054696b]

I love the ingenuity, I did something similar with smt ics.

[@mirhossen367]

your diagram can not match with your project... say what kind of resistor you used on R9? and its watt and its resistance ? also doubt about R1... and you use mosfet driver as emiter follower why ?

[@marcusfred4480]

Very good video. You explain circuit function very clearly and the visuals outlining the parts of the circuit you are describing the function and operation of is very helpful. Found that modification to the surface mount transistor very interesting too. Thank you and keep up the good work! :)

[@EduardoDiaz-zh7rt]

Muí bueno ok

[@EduardoDiaz-zh7rt]

Todo bien

[@ARUNRAM-1990]

At 1:52, what about the TL494 pin no:3 (feedback)?

[@iblesbosuok]

Great video. Recently, there are many options of good PWM controller. One of them is RT9259 which applies totem pole output state. Totem pole output can prevent voltage-pumping by complex load. Cheers from Indonesia

[@John_Smith__]

A clear example of Chip Surgery :) good video!

[@charanrod9910]

Pcb layout is missing...pls upload...

[@nikhilrastogi4476]

You videos is very good, your explanation is very very good

[@hosseiny1973]

In put capasitor are important.and you can add a 100n capasitor at the out put to remove spayks

[@republicoftutorials6068]

I have build this circuit but this circuit diagram does not work until you replace R7 (220R) to R9 (1K) and also completely remove R8 (220R) than it works great

[@ugurozsoy8001]

I made the circuit but it doesn't adjust the voltage and amperes. Can you help me

[@victorribeiro2304]

Thank you. Those changes made my circuit work.

[@ugurozsoy8001]

@@victorribeiro2304 can you help me

[@victorribeiro2304]

@@ugurozsoy8001 what's wrong?

[@ugurozsoy8001]

@@victorribeiro2304 I did the circuit exactly but it did not work. I cannot control the voltage and amperage.

[@marceltartan4747]

no need pairs of BD transistors ,in this configuration TL494 can comand directly MOS FET 's.

[@electronic7979]

Very good project 👍

[@MCsCreations]

Really nice work, dude! Great little board! 😃

[@nikolajpetrow4610]

what is the name of the device with which we measure the resistance of the coil you wound? 10:02 minute

[@lenaroseguera1241]

How can we use N channel mosfet?

[@agsolarpower5975]

Nice circuit board with great efficiency 👍👍👍👍

[@metl_play]

I have never seen somebody Hacking a MOSFET before.

[@asadrao5147]

Why is there no pin number 3 mentioned on LT494 in this video?

[@johnconrad5487]

The supply is unstable. when you show the scope waveform at 2:32 the pulses are dithering with a 10 Amp load. If you reduce the load to just a few amps it may get worse.. You cannot use the DVM to check for stability. The output could be oscillating from 0 to 10V and the DVM will show 5V. The scope is the only way and the pulses must be completely steady. In any case I give this a Thumbs UP!

[@electronics4all]

hello.i made this circuit and seems to work but the mosfets gets too hot even with 200ma load although in the video says you dont need heat sink for about 3 amps load.i wonder what will happen with 3amps load or more.also i see comments that you must change some components with others?which is the corrent placement after all?

[@indiantechboys9907]

Help i made same circuit but when i put load on the output the mosfet gets very hot in seconds and show only 400ma max current at output

[@tiagonet8794]

have you put a sink in the mosfets???

[@indiantechboys9907]

@@tiagonet8794 yes but he said you can draw 3-5a with out any heat sink

[@enlaescnoaprendinada]

can the pin 3 of the 494 be un used?

[@electromachine3072]

can you make mppt solar charging controller!

[@ΠάριςΑζής]

Are you sure that the values of the resistors R7 and R9 are as shown in the schematic? Something seems to be wrong with the driver stage. VT1 seems to be permanently on. This means that it's emitter will always be in almost the entire B+ voltage. This voltage needs to be shorted to the circuit ground when the end of the the R9 terminal that goes to TL494 is grounded through the I.C. Is the value of R9 capable to saturate VT2 and can VT1 (or both transistors) withstand such direct short circuit currents of the power supply voltage, especially if it is at 30 Volts? I wonder how much is the power loss of the driver stage as it is shown. Not the best design anyway.

[@hichamtassi1753]

Hello, i built the circuit but i found out that one of the P channel mosfets is always giving maximum output while the other is regulating. Other thing, the circuit doesn't work with input below 18v and doesn't go more than 11v. Any idea why ? Thanks

[@ΠάριςΑζής]

@@hichamtassi1753 Since the two mosfets work in parallel, what you say seems to be not possible. If one of them is shorted out, only in this case can this problem happen, but in such a case there is no regulation at all. You need to check your connections again and see the test signals at the output of the I.C. Normally it should work properly with 12V input. Check the 5V voltage reference of the I.C as well...

[@hichamtassi1753]

@@ΠάριςΑζής Hello, i checked and indeed one of the Drain tracks was cutted. Now it regulates the voltage normally. But below 18V it turns off, the current limit function works but max current obtained is 500mA (with 0.02 ohm resistor), and the irf9540 that i used heat a lot even with only 100mA load.. I have also noticed something: in the PCB the drains are linked to the diode whereas in the diagram, the source is linked to the diode, it seems Drain and Source are inverted... Thanks for your comments on this.

[@ΠάριςΑζής]

@@hichamtassi1753 The drains are correctly connected to the cathodes of the double shottky diode. The sources are connected to B+. This is normal because the mosfets are P channel. The schematic is correct as regards that. You need to find out the fault by careful troubleshooting. Check the resistor values first and their connections afterwards. Then you must do the adjustments of the trimmers...

[@hichamtassi1753]

@@ΠάριςΑζής Ok, thanks for the info on the P channel. The issue i am facing now is that i have no power, voltage adjustment is ok, but under small load, voltage drop to zero regardless of the potentiometer position. Pin 16 sees from 0 to 0.6v, and i traced the shunt, and it seems good. Any idea where to look at ? Thanks

[@nocturnal6982]

1.98 volt minimum,, not 0,,but i see the great explanation👍 ,,very well

[@henryquispe1701]

Can I use the MOSFET irf3205 or would I have any problem in the circuit ? thanks

[@SparkyJames]

Wow that was so cool DIY transistors!!!

[@eduardovazquez6141]

ES POSIBLE AGREGAR UN LIITADOR DE CORRIENTE QUE ANTE UN CORTO SE PROTEJA?

[@protikbanerjee9323]

Thank you for the excellent Circuit. Need some help on output Transistor, can you suggest any other transistors equivalent in place of IRF4905 they are not available in our market. My transformer DC output is 37V- 6Amps after filter. I want to use this as bench power supply for my mini workstation. I am a hobbyest.

[@ГеоргиХристов-г6р]

The current sensing resistor (Rx) is outside of voltage control loop! The output voltage will droop with the voltage drop on this resistor (0.375V). Output voltage will not be stabilized.

[@fexaboss8727]

Kasyan is doing a great work but he needs more precision because I also built the circuit but my voltage is not stable enough to drive a load...

[@CorneredCat0]

A link to an archive is not working, great video though

[@miguelduran1549]

this converter keeps output constant although variable input ??? la salida se mantiene constante aunque la entrada varie ???

[@atec9228]

In this video there is a Chinese type power supply similar to the baku 1502 but you can see an LCD display inside... What modification did you make? What circuit is inside? schematics of this Thank you

[@hakiaysan5678]

Schematic 220 ohm, you use 150 ohm?

[@AhsanAli-so1fg]

Can u plz share PCB layout for this cct. I can't find in description. Plz share PCB layout

[@thevoidedwarranty]

I built it & it works ,BUT , as he mentions it's not a bench powersupply ,it's a charger .because it is very noisy . At 3 amps output i get about 2.5 volts of ripple .

[@mirhossen367]

and why can not used feedback pin (3 no pin of tl494) ? explaine about DTC (pin no 4 of tl494)...

[@krishnawa_]

I never such a good explanation about tl494 in youtube, great explanation and can you do how to design circuit with tl494

[@SundayOwens]

Please i need to try it , where os yhe circuit?

[@ahmedelec2242]

Archive link not working!

[@Rnara21213]

Hi, I have built the circuit but I am having trouble with voltage adjustment, I am trying to use a 5k trim pot and it is producing strange results and no results when the 1k resistor is added ad shown in the circuit. Can you please help me?

[@Deep_Thoughts99]

Love your videos and channel, need more these types of videos, thanks

[@brunocaetano1850]

thanks for contribution my friend!

[@luciolanari9532]

Articolo molto interessante, da imitare; peccato non ci siano indicazioni per la costruzione dell'induttanza, ottimo se funziona.

[@alansailing1387]

Love the Frankentransistor

[@aboimad5178]

hello thank you first .... but i do have one qustion what should i modify to let it work on 37v input and 25A current ?

[@CUCARACHA707]

Frecuency operation of the circuit ??

[@jormamannikko4304]

what is your small oscilloscope, which looks almost a smartphone, what brand and price, where to get

[@rayansinger672]

Hello, Thanks so much for the video. I'm wondering how could I modify the schematic to get 0-60VDC, 0-50A adjustable output? Can you help me with that?

[@pritikanadas3140]

Can we use N tip MOSFET

[@TheUPX]

this schematic work only with >12V input ? i need to start from 8V. Is not work with 8V ? because IRF ? but with IRL ?

[@ivancruzluque2795]

Como darle.usos a tranformadores de este tipo

[@soundarpandian3423]

First like from tamilnadu 😀👍

[@saveearthsavenextgeneratio5810]

👌👍

[@samyou8482]

where is the pcb in the description???

[@Edmorbus]

Thank you for another excellent video

[@luiscarlosmarques3946]

Great xplain, the best. TKS

[@jacekm]

If I put transistors on P-chanel IRFP9140 100V VDS, power supply TL494 on a 33V Zener diode and a 2W 270 Ohm resistor, 220 Ohm resistors, 270 Ohm tam, capacitors on 80V, gate resistors 10 Ohm, will the converter work and will it not burn up? When you power it from Vmax 60V or 55V 6A panels and connect it to 12V charging? Also consider whether to exceed 20V VGS. Schottky diode 20A 80V. Inductor 95uH.Why, after making the above-mentioned modifications, i.e. changing the transistors to the mentioned IRFP9140, inserting a 270 Ohm resistor and a 33V 1.3W Zener diode on the TL494 power supply, replacing the 220 Ohm resistors from the diagram - I gave 270 Ohm, gate resistors instead of 4.7 Ohm, I put 10 Ohm instead I put a resistor at the 680 Ohm output at 820 Ohm. After exceeding the supply voltage of 38V at the input, an undesirable 25V appears at the output despite the regulation? What is wrong?So I have 35V and I connect it to the converter input, I set 14.5V at the output. I increase the voltage at the output and exceed 38V - suddenly the output appears 25V or more, potentiometer regulation then no longer works. What's the problem? I think that the choke changed something from 95uH to about 150uH. He should help.

[@humbertorodriguez6596]

Hi, can I short-ciruit The leads at the out to adjust my desired value of curren?

[@Abcd-i8q3u]

How to modify it for 60 volt 15 amp cv cc

[@音樂留聲機]

Through the actual production, when the input voltage above 27 v, output voltage is close to the output voltage, power tube will be destroyed. Test conditions for no-load cases, could you tell me what is the cause, thank you.

[@AT_Eng]

how can i buy this unit from you 220v AC input and 2v-30v DC out regulated and adjustable current upto 10 Amp or more?

[@dungcdt]

Hello! I have made this circuit according to the diagram, but I can only adjust the output voltage in the range of 2-13vdc while the input voltage is 24vdc. Please show me why?

[@Sekhar_Home]

Pls can u provide me the circuit??

[@cibilsunny]

Is this circuit can boost the out put voltage or not?! In my case in put is 3.7 volt!!

[@MCTV-qn9qn]

How can i order complete kit to this module?

[@rawandjaza5929]

You use 2 resistor 0.1 ohm 5w it mean current shunt is 0.05 ohm is that correct ? Can use any P chanel mosfet with high output amps ?

[@КевинКоршунов]

Would it be possible to use an electric load to control a max 24V and 30A at the output? And how many P channel mosfets would you need?

[@ronnolasco8809]

Thank for the knowledge.. .if you have any idea about how to build a 12-30vdc input and an output of split type psu like +/-50vdc.. .the ampplication why its split type for thw output is for amplifier..

[@GnuReligion]

Yes, a split rail is useful for audio amp circuits.

[@eduardobautista4442]

Is there a way to make this circuit higher voltage input.? 50volts.

[@cocas1000]

Very good! Another great job,Keep up !

[@kusiadomakokelvin9988]

Wow this is crazy , good job

[@taubatnasukha3030]

can we use N chanel Mosfet?

[@osazeimhontu3239]

Thanks for your tutorials,I bought both transformer calculator programs,can you make a video for flyback converter and how to use the application,thanks .

[@willystechnologies]

where is the link to download PCB design??

[@robertmartin5679]

Make video how to make variable 1 V and 40 A power supply.

[@cagdaspoyraz8294]

you are a different woman and a different person and so you are so impressive.

[@chibuzoeze4225]

Can I use it as solar charge controller?

[@Sekhar_Home]

U can

[@carlospadillagarcia3379]

Hola. Felicidades por el video.una pregunta. Se puede poner un toroide más grande que tenga 80uh igual en vez de poner dos?

[@mosttaffabadrie8451]

Excellent vidéo merci

[@antoniosegado6910]

Me gustaria saver el diametro del cable de la bobina y como se hace el shunt

[@tiagonet8794]

How modify this circuit for up to 60A?

[@rreemyy]

Where is zener diode for gate protection? You can't connect gate to ground if input voltage is higher then ~20V.

[@ΠάριςΑζής]

@@electromagic3111 On both of them. Its purpose is to protect gate from shorting out if Vp(eak) coming of the pulse generator exceeds Vgs of the mosfet used in the application. Here it can reach almost 30V, depending on the power supply voltage, which is too much for the gates' safety.

[@ΠάριςΑζής]

Good remark!

[@ΠάριςΑζής]

@@electromagic3111 Greece.

[@ΠάριςΑζής]

@@electromagic3111 I don't know what divano means. Where did you hear it? Divani is the bed, very near to divano, but surely not the same.

[@ΠάριςΑζής]

@@electromagic3111 What do you need it for? (And it's my time now to ask you where are you from)!

[@siavasharash5448]

I have made this and every parts inclouding voltage and cureent setting working fine But short circuit protection dident work By the way i install 0.05 shunt So why short circuit protection wont work???

[@jualanled5563]

Hi Sir, can the circuit of P-channel change to N-channel ? should be change /add circuit ? thanks

[@Mustafa_Dinc_]

Ben bu devreyi 0 50 v , 0 10A olarak yaptım, tl494 ü ve kullandığım 16f676 entegresini 12V ile besledim, Devre çok karallı çalıştı, yalnız R9 daki direnç kavlurdu, yine de düzenli çalışıyorlar öneri, Videolarınızda kendi orjinal sesinizi kullanınız, kendi sesiniz daha güzel, Teşekkürler

[@aboimad5178]

I Made the circuit but MOSFETs get very hot even on low current

[@aimsinteractivepvtltd8147]

I really appreciate this supply for hobbyist, but in older days I have seen it working from 0-24v. I want you to please mention changes to make it work from 0v level rather than 2v

[@jenpau0269]

Can you make with CC Constant Current - CV Constant Voltage please

[@Sekhar_Home]

This is cc cv

[@doriansolares1266]

Very good video, power supply with circuits electronics