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Old 29 June 2008, 14:45   #1
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240volt to 12volt ?

In need of a 240v to 12v max 10amp. (12v Preferably via cigarate socket )
See many lower amperage units, havin trouble finding 10amp version.

Appreciate any links
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Old 29 June 2008, 15:27   #2
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Regulated supplies aren't cheap when you get to that sort of current.

I would use a car battery and charge it up a lot - don't be tempted to use the charger direct as they give a lot more than 12v.

The cheapest option would be a computer power supply. Get a GOOD 500W one - the best way to tell quality is by weight. Just cos it says 500w on the label doesn't really mean much!!!

Most will claim to put out about 18 - 20amps at 12v but take this with a pinch of salt. 10 amps might just be realistic.

Don't pay much more than 30 for the psu.

Diags of pinouts here

http://en.wikipedia.org/wiki/Computer_power_supply
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Old 29 June 2008, 17:17   #3
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http://www.maplin.co.uk/module.aspx?...o=231&doy=29m6
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Old 29 June 2008, 17:41   #4
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Quote:
Originally Posted by Chris View Post

Then just add these:

http://www.maplin.co.uk/module.aspx?...=1055&doy=29m6

http://www.maplin.co.uk/module.aspx?...45987&doy=29m6

and a length of cable rated for 10A to give you a connection for your cigarette lighter plug.

Cheers

Chris
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Old 29 June 2008, 18:09   #5
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If its for occassional 10A rather than prolonged use. How about a "jump start pack". Mine has a 15A cigarrette lighter socket, and came with a small mains trickle charger. I don't think the trickle charge could cope with continually replenishing 10A at 12V. Mine was less than the cost of the maplin 10A power supply above.
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Old 29 June 2008, 18:16   #6
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Quote:
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If its for occassional 10A rather than prolonged use. How about a "jump start pack". Mine has a 15A cigarrette lighter socket, and came with a small mains trickle charger. I don't think the trickle charge could cope with continually replenishing 10A at 12V. Mine was less than the cost of the maplin 10A power supply above.
I use mine like this all the time.

I don't bother with the trickle charger - I just connect a 4amp charger straight to the croc clips!!!
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