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DIY do-it-yourself power supply

Electronics / Power supplies
Added 15 comments

Good day dear the inhabitants of our siteToday I will tell and show you how to make a universal power supply do it yourself at 5A.

For this we need:
two 10 kΩ resistors
on button
USB port
Terminal on the instrument unit, L-16.8 mm (BP-10) through, red and black.


Switching Power Supply AC 110V 220V to DC 24V 6A AC-DC ()


Digital ammeter-voltmeter ()

Adjustable voltage and current converter 5A ()

DIY do-it-yourself power supply

I used the case from the old computer power supply, removing all electronics leaving only the cooling cooler.

Step one
Soldering tuning resistors from the converter instead, we put two variable resistors at 10 kOhm in return


Second step
We collect everything as shown in the diagram

I added a roll of 12V to the cooler’s power supply, since the cooler is powered directly from 24V
I also recommend that you put a jumper on the USB connector between the 2nd and 3rd contact, otherwise when charging the mobile, the charging mode will be slow and the charging time of the phone will increase accordingly. The output voltage is adjustable from 1.25V to 24V and the current from 0 to 5-6A

Step three
Assembling all the blocks into the case, that's what I got





Fourth step
Check circuit health

Phone charging

60 Ah car battery charge


In general, the power supply showed itself well. The current of 5 A keeps excellent! Good luck to everyone until we meet again!
8.8
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Added 15 comments

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15 comments
Guest OlegelO 0
Reply To quote A complaint
I join the request - can I see the final connection diagram?
Guest Pavel 0
Reply To quote A complaint
Good afternoon, I’m interested in collecting, you can have the right scheme
-4
Reply To quote A complaint
and let's get it from 3.14 for not obeying your parents
+4
Reply To quote A complaint
+5
Reply To quote A complaint
Quote: Coudeyar
The cooler is a fan. IS REPLACING RUSSIAN WORDS TO FOREIGNERS.

But when will you finally engage in self-education instead of flooding!
1. That "cooler" that "fan" - the words are foreign.
2. - This is a radiator with a fan mounted on it. Learn the materiel!
-3
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Quote: Ivan_Pokhmelev
What is it for?

Cooler-fan .READING REPLACEMENT OF RUSSIAN WORDS TO FOREIGNERS.
+2
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What is it for? What does the list of words in which many pairs are not complete synonyms have to do with the illiterate use of the technical term?
-2
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Quote: Ivan_Pokhmelev
Call the fan cooler


Absolute - Perfect
Absorption - absorption
Abstract - Abstract
Agitate - engage, excite
Agrarian - agricultural
Aggressive - Offensive
Adequate - the same
Adultery - Adultery
Act - action
Active - Active
Actual - Topical
The alternative is equivalence; another opportunity
Alternative - adversarial
Altruist - well-wisher
Immoral - immoral
Analysis - parsing
Similar - same, identical
Questionnaire - Questionnaire
Entourage - environment
Applause - applause
Argument is an argument
Arrest - Detention
Archive - Tree Storage
+1
Reply To quote A complaint
Quote: Roman2468
"not a cooler but a fan", whoever likes it and calls it

There is by no means a definite technical terminology which should not be neglected. To call a fan a cooler is the same as to call a goat a sheep. Learn the materiel. ;)
0
Reply To quote A complaint
Quote: Ivan_Pokhmelev
By the way, the manufacturer just honestly indicated the maximum power of 30 W for the DC-DC converter used here, so long-term charging of a car battery with a current of more than 2 A is likely to lead to a PSU failure.

Yes ..... I wouldn’t charge the car with that. Weak! And so the design is excellent! The main thing is cheap and it can be used to power LED lamps.
Author 0
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This is a trifle about "not a cooler but a fan", whoever likes it and calls it so, didn’t draw the fault on the microchip account. I apologize for the "muzzle" well, I didn’t sign where the current is and where the voltage is, I don’t need why I remember! Time will show decent cooling, I charged the battery for half a day with a current of about 2A, all parts are working,
0
Reply To quote A complaint
The Chinese make a lot of modules, often of quite decent quality, with a wide variety of parameters. It is only necessary to choose the right modules and seller. Manufacturers are sometimes cunning with parameters, they don’t directly lie, and do not indicate that not all combinations of parameters are achievable. By the way, the manufacturer just honestly indicated the maximum power of 30 W for the DC-DC converter used here, so long-term charging of a car battery with a current of more than 2 A is likely to lead to a PSU failure.
-1
Reply To quote A complaint
Quote: Ivan_Pokhmelev
1. Not a cooler, but a fan.
2. The connection of the LM7812 is incorrectly drawn.

Ivan, I would also draw the diagram wrong! It makes no sense to chew on people - no one will appreciate it. And when he ponders himself in the head of the brain will be added. The idea itself is good ... I ordered a block of 30 volts 5 amperes on ebay-paid 50 euros and 50 euros for customs clearance tore off in 2012. If I knew that this can be done, I didn’t order it.
-1
Reply To quote A complaint
1. Not a cooler, but a fan.
2. The connection of the LM7812 is incorrectly drawn.
3. The output of the regulated voltage to the USB port is an extremely dubious and dangerous venture for the equipment connected to charging, especially considering that the "face" does not say where is the current and where is the voltage.
4. Completely in vain 230 V to the switch pulled off with low-voltage wires.
-2
Reply To quote A complaint
Hey. Nice and easy to manufacture design!

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