pigeondave
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| posted on 19/3/20 at 01:41 PM |
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mains to DC12v 20a
Hi all,
I'm looking for a mains to 12v 20a power supply.
Basically I'd like a cigarette lighter socket in the garage/workshop.
Electrics always worry me, and a lot of the stuff online looks Chinese and of questionable quality.
Also not sure if i need 20A, i picked that as most sockets show 20A capability.
Doe's anyone have a link for something suitable?
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Grimsdale
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| posted on 19/3/20 at 02:02 PM |
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an old computer psu should be able to supply that, you just need to connect the two wires in the main multiplug to switch it on.
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SJ
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| posted on 19/3/20 at 02:51 PM |
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Old 12v car battery and a charger?
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loggyboy
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| posted on 19/3/20 at 02:54 PM |
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20a seems lots - whats it for?
Mistral Motorsport
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pigeondave
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| posted on 19/3/20 at 03:03 PM |
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quote:
Originally posted by loggyboy
20a seems lots - whats it for?
I dunno, I just thought if they're rated for 20A why not have a 20A capability.
If going for less is easier and cheaper, i'll try that.
I like the computer PSU idea.
Really looking for something I can bundle up and put away, so was looking for a cheap (but well made) transformer block type thing.
Not favouring the battery thing as i'd like it easily portable.
Keep the ideas coming
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David Jenkins
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| posted on 19/3/20 at 03:18 PM |
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These things work very well - I have several that supply power to my 3D printers.
ebay
The one very real hazard with these things is the exposed terminal strip at the back - both mains and output. Some form of rear enclosure is
essential to keep everything safe - if you have access to a 3D printer then there's loads of designs available for a rear cover, but if
metalworking's your thing then a folded metal rear cover would be fine. You do have to be sure that your wiring and earthing is safe and secure.
I've used both methods...
[Edited on 19/3/20 by David Jenkins]
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cliftyhanger
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| posted on 19/3/20 at 03:26 PM |
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20A is a lot.
Most new cars have a 10A or less supply as not used as fag lighters, but to power chargers and suchlike.
Have a think about what you plan to plug in, otherwise you will be over complicating things. I assume you are not planning on using an actual fag
lighter?
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HowardB
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| posted on 19/3/20 at 03:31 PM |
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range up to 60A linky
not cheap but then they can be voltage controlled, current limited etc,
Howard
Fisher Fury was 2000 Zetec - now a 1600 (it Lives again  and goes zoom)
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coyoteboy
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| posted on 19/3/20 at 05:31 PM |
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I've always had a chopped up ATX power supply sat on my bench which supplies every voltage range I need. Cut the cables back, fit banana
sockets, you have a nice reliable, stable PSU. You could even build it into the workbench and have it remoted underneath so only the sockets were
visible.
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jps
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| posted on 20/3/20 at 09:43 AM |
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I bought one of these recently: https://www.ebay.co.uk/itm/12V-Air-Compressor-Tyre-Inflator-and-mains-power-supply-converter/152694505216
The pump died fairly quickly (after about 5 uses) but the power supply is powering a more susbstantial tyre inflator, which apparently has a peak
amperage of more than the 10A this power supply is apparently good for.
I am tempted to buy one of those PSUs David has linked to though.
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