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4hv.org :: Forums :: Sale and Trade
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Help finding a dc to dc converter that makes two volt 60 plus amps less than 400 dollars

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Andy
Sun Mar 01 2015, 05:09AM Print
Andy Registered Member #4266 Joined: Fri Dec 16 2011, 03:15AM
Location:
Posts: 874
 		Hi I think the title says it, im hoping to find a power supply that produces 2 volt with high amps.

Cheers for any help
Andy
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mister_rf
Sun Mar 01 2015, 10:44AM
mister_rf Registered Member #4465 Joined: Wed Apr 18 2012, 08:37AM
Location: Bucharest, Romania
Posts: 145
 		In my opinion maybe you need to search for a cheap 2.8V-3.3V power supply and later try to modify it for the 2V output.
E.g.
Link2
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Erlend^SE
Sun Mar 01 2015, 11:21AM
Erlend^SE Registered Member #1565 Joined: Wed Jun 25 2008, 09:08PM
Location: Norway
Posts: 159
 		Maybe you can reuse the cpu supply from a old computer mainboard? The cpu is powered from rather low voltage and is still high power.
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Shrad
Sun Mar 01 2015, 01:37PM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
 		use a 3,3V power supply as soon as you have two Vsense inputs for current compensation

with an op-amp and a couple resistors you can use the Vsense inputs to adjust voltage in a certain range

there is the only example I found but I recall of a simple op-amp circuit which did that for any power supply with Vsense

Link2
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Andy
Mon Mar 02 2015, 06:53AM
Andy Registered Member #4266 Joined: Fri Dec 16 2011, 03:15AM
Location:
Posts: 874
 		Thanks guys, tryed looking for other voltage, and slight change the design, but whyill searching found this Link2 if it stays at the price will get it.
Allso found a inductor to match it, thanks for the ideas and sorry for the waste of time.
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mister_rf
Mon Mar 02 2015, 09:35AM
mister_rf Registered Member #4465 Joined: Wed Apr 18 2012, 08:37AM
Location: Bucharest, Romania
Posts: 145
 		In order to use that DC-DC converter you need to consider there’s a need for an additional 26Vdc up to 55Vdc power supply. shades
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Shrad
Mon Mar 02 2015, 02:19PM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
 		delivered:

Link2

all Nemic-Lambda are good, and they even have a S+/S- input which you can use for compensation or even current adjustment

for giving you an idea : Link2

you can use S+/S- to make it a constant current supply, or to adjust voltage to an extent...
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Andy
Tue Mar 03 2015, 06:45AM
Andy Registered Member #4266 Joined: Fri Dec 16 2011, 03:15AM
Location:
Posts: 874
 		Following the chain shows they are 3k about new, somewhat worryed about the truck door on that one.

Booked marked the site, but having trouble match 300 amps to a inductor, without sutration and high joules.

This is the inductor I would like to use, so more match the psu to its values.
Link2
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mister_rf
Tue Mar 03 2015, 03:36PM
mister_rf Registered Member #4465 Joined: Wed Apr 18 2012, 08:37AM
Location: Bucharest, Romania
Posts: 145
 		If you ask my opinion, I’ll suggest you not to buy anything until all details of the project will be finalized.
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Shrad
Tue Mar 03 2015, 03:42PM
Shrad Registered Member #3215 Joined: Sun Sept 19 2010, 08:42PM
Location:
Posts: 780
 		or to test it with second hand hardware to further refine your requirements...

do you really need a brand new PSU for a proof of concept?

you can always use the sense inputs to limit the current to a maximum value so your 60 amps are not outreached, but we don't know much of your requirements so it would be difficult to think about a PSU without other information
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