V
V
vnuendru2015-06-16 19:17:20
Do it yourself
vnuendru, 2015-06-16 19:17:20

What connector is needed for a 5-10A power supply?

A lot of 5-10 amp power supplies are sold in China, only they don’t look like iron boxes with terminals, but like power supplies for a laptop, and, accordingly, at the end of the wire there is a regular round plug like for a laptop. I went through the datasheets of many of these round power connectors, they are all rated for max 2.5 amperes, usually 1, in fact, the question arises: what kind of connector is needed for such power supplies? how to use them without dissection?

Answer the question

In order to leave comments, you need to log in

3 answer(s)
A
Andrey Ermachenok, 2015-06-16
@eapeap

Notebook PSUs give out from 4 to 8 A (judging by the markings).
I have not encountered any problems with the contact on the connector at the laptops. Probably because laptops do not consume such currents often, or never.
Chinese power supplies for 5-10 amps probably also work fine with their connectors without preparation. Because they have Chinese amps ...

A
Alexander Komarchuk, 2015-06-17
@AlexanderKomarchouk

you can talk about "Chinese watts" for a long time, but this will not help to solve the problem.
So I had to make a transformer power supply, 12 volts 15 amperes.
And when I already found a transformer (s) (2 pcs. for halogen lamps 12 V, 8 A, common-mode switching), not "electronic", but just ordinary ones. I bought a diode bridge KBPC3510 (35A). Then it turned out that there is no wire that can connect it all. There are different data in the google tables, one of them indicates 1.5 mm.sq. copper wire is allowed for a long time 19 A. I had to go to electrical goods and buy such a wire. It turned out to be quite thick, I had to take this into account when installing, soldering.
For simplicity, you can use the rule "the required wire cross-sectional area is equal to the maximum current divided by 10".
So, look at what wires you have in the power supply? What are the cross sections of the conductors in the connectors? After that, you can evaluate how many amperes this or that power supply actually "gives".

Didn't find what you were looking for?

Ask your question

Ask a Question

731 491 924 answers to any question