24 to 12 volt DC /DC regulated converter

[ean_p]

looking for a good quality closely regulated 24v to 12volt DC/DC converter with about 5 amp capacity. Don't want one of these that have a 13.8v output....needs to be 12volt +/- a scratch. Has anyone any ideas of a source please....?

best'ist regards

Ian P.

 

[William_H]

I am guessing that you want 12 volts to supply a computer. I imagine you may have trouble finding one. Unless you find a computer supply regulator for 24 volts. Most converters are designed to feed a system that was originally built for running on a 12 volt battery and charging system hence the 13.75 volt output. They are I think generally quite regulated to 13.75. You may be able to open one up and find an adjustment to adjust to 12 volts. Failing that you might try puting 2 silicon diodes of high current rating in series. They will drop around .7 each which would bring you to 12.35 volts which may suit. Note however the .7 volt drop varies with temperature and indvidual diodes and could be between .5 and .75 volts so you may even need 3 diodes. good luck olewill

 

[ean_p]

Thanks for that William, will have a play with the diodes and see what happens......incidently the input is to a screen that originaly was fed with 240v AC which was dropped and regulated to a very close 12v dc

thanks
Ian p.

 

[LadyInBed]

www.waeco.co.uk do a range

They also do a "Coolpower 804K" product# 804k-2412 for £15.24
(4A / 48Watts, i/p 20 - 30v, o/p 12.5v +/- 10%)
which is in the catalogue but not on the website.

 

[nimbusgb]

SGS-thomson used to make a SG-412 DC switching regulator - 12 volts out, 16-48 volts in 4 amp nominal 5amp maximum.

Lambda makes a great range of DC/DC convertors that do exactly what you want. try http://www.rselectronics.com/

 

[ean_p]

many thanks fella's

regards

Ian P.

 

[MapisM]

Am I missing something?

Can't see the need for a converter.
Why don't you just take the 12V out of your 24V batteries?

 

[mainmarine]

Hi I have a lightly used 24-12v converter will carry 15 amps
please contact me for details, if interested.
malc@mainmarine./co.uk

 

[mainmarine]

sorry it should be malc@mainmarine.co.uk

 

[ean_p]

Re: Am I missing something?

The terminal voltage on the batteries can vary from 22.5 - 27.5 volts so if centre tapped would carry this degree of variation ...I need something a little more tightly regulated and of course centre tapping a battery bank with out a 'flip flop ' relay would deplete one side and cause some damage not to mention problems in bringing that side back to full capacity without splitting the bank and charging on a 12v regime

 

[ean_p]

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