12v 40 amp power supply
12v 40 amp power supply
(OP)
Hello everybody, I am looking for a power supply to drive a petrol drum pump that claims a rating of 35 amps. Currently we are using a lead acid truck battery for the job which charging all the time is a painful experience.
I have only managed to find lab power supplies, I would rather a steel cased supply with no adjustment or switches/displays to break.
Cheers
I have only managed to find lab power supplies, I would rather a steel cased supply with no adjustment or switches/displays to break.
Cheers





RE: 12v 40 amp power supply
Gunnar Englund
www.gke.org
RE: 12v 40 amp power supply
Often they are called "battery eliminators" since they take abuse and run 12V or 24V.
RE: 12v 40 amp power supply
Gunnar Englund
www.gke.org
RE: 12v 40 amp power supply
Try this company XP Plc. sales:@xpplc.com Tel+44(0)1189845515 They manufacture and supply switch mode power supplies,they will even supply to your request.
But why dont you just make your own supply with a transtormer say 1kva 25vac sec will give you 40amps.a bridge rectifier two 1000uf caps and fuse.
Barry.
RE: 12v 40 amp power supply
Barry.
RE: 12v 40 amp power supply
the correct trany is 600va and 11vac sec. rectified will give you 21.54cdc.
Barry.
RE: 12v 40 amp power supply
18 V is the standard secondary voltage if you want 24 V DC and use capacitors for smoothing.
Best thing to do is use a three-phase transformer and a six-pulse rectifier with some smoothing. Then again, 18 V RMS is the correct secondary voltage for 24 V DC.
Gunnar Englund
www.gke.org
RE: 12v 40 amp power supply
There are probably some saftey issues to worry about, but they'd be about the same with a battery or power supply.
RE: 12v 40 amp power supply
Barry.
RE: 12v 40 amp power supply
Gunnar Englund
www.gke.org
RE: 12v 40 amp power supply
The original Fry's family business was and is grocery supermarkets in the San Jose, CA area. One brother decided to do something similar, but different, hence Fry's Electronics.
TTFN
RE: 12v 40 amp power supply
Skogs' comment about the SITOP supplies is well-founded. I use them a lot in applications where I want zero fuss and high reliability. Up to now they have proved very good.
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If we learn from our mistakes,
I'm getting a great education!
RE: 12v 40 amp power supply
Hang on, I'll get the name of that battery elliminator for you.
RE: 12v 40 amp power supply
Hmmm, 'start-up current' might be something worth worrying about. In this sense, a big dumb Battery Eliminator might be a better choice than an overly-smart hi-tech power supply that keeps folding back.
RE: 12v 40 amp power supply
http://www.analyticsystems.com/products/pws610.htm
The website is:
http://www.analyticsystems.com/home.htm
They have 19" rack mount types. Bulkhead mounts.
They are better for this service because of what VE1BLL mentions. They are also usually rated at 13.6V because that is what battery's really are. Also they have ratings like this one; 40A continuous, 45A for one minute.
If you want to run down to the "local store" look at your local chandlery (boating goods) store as boats use these things everywhere.
RE: 12v 40 amp power supply
When the Anaheim Fry's opened, they had about 80 cashiers on duty and the line wrapped its way around the entire store. Bear in mind that the store is at least 200 ft on a side.
TTFN
RE: 12v 40 amp power supply
RE: 12v 40 amp power supply
Awsome - I usually see another curvature when looking down...
Gunnar Englund
www.gke.org
RE: 12v 40 amp power supply
And no! don't say anything!! I know what you are thinking.. tisk, tisk.