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Old 07-05-2004, 09:28 AM   #1
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NEW Small DC-DC Power Supply
I have see lot of request for power supply to give 10 to 14 volt

If you can make electronic you can use this simple schematic

It got because you connect to you car battery directed, It not make lot of heat

The some of the part I get as free sample
Other part I get from old pc power supply

This power supply will cost my max. 5$ and 1-2 hours work

I think small cost is good
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Old 07-05-2004, 10:02 AM   #2
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can it be modified to give out a constant 12v?
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Old 07-05-2004, 10:05 AM   #3
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Quote: Originally Posted by djmickyg
can it be modified to give out a constant 12v?

Put a jumper over the multiture resistor and change R3 to 218 Kohm 1%

the et give +12 volt out
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Old 07-17-2004, 07:38 AM   #4
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Diagram for 10 power supply with can be use in a mp3car project

info on my homepage
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Old 07-25-2004, 11:25 AM   #5
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Quote: Originally Posted by 4u2n
I have see lot of request for power supply to give 10 to 14 volt

If you can make electronic you can use this simple schematic

It got because you connect to you car battery directed, It not make lot of heat

The some of the part I get as free sample
Other part I get from old pc power supply

This power supply will cost my max. 5$ and 1-2 hours work

I think small cost is good

Where T1 you have found the transformer and name to the Mosfet N1 its?

Hi
Mauri
Last edited by mauri; 07-25-2004 at 11:27 AM.
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Old 07-25-2004, 12:42 PM   #6
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Quote: Originally Posted by mauri
Where T1 you have found the transformer and name to the Mosfet N1 its?

Hi
Mauri

??? I think is ok
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Old 07-25-2004, 01:39 PM   #7
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will you make these and sell them for those of of that aren't electronic literate?
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Old 07-25-2004, 02:06 PM   #8
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Quote: Originally Posted by cadence117
will you make these and sell them for those of of that aren't electronic literate?

Not now, i have to finish my project

I'll think there can be a chance to some when I finish my Mp3Car
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Old 07-25-2004, 03:07 PM   #9
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The transformer T1 and' difficult to find..
Do you know a place where to purchase it on-line in Internet?

Mauri
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Old 07-25-2004, 03:38 PM   #10
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let us know how good and efficient this device is once you have your carputer all setup...


i'd be interested in checking it out, since looking at tat electrical diagram doesn't mean anything more to me than egyptian heiroglyphics
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Old 07-25-2004, 03:52 PM   #11
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Quote: Originally Posted by mauri
The transformer T1 and' difficult to find..
Do you know a place where to purchase it on-line in Internet?

Mauri

The transformer T1 I get as free samples for Cooper Electronic Technologies

http://www.cooperet.com/

1 week to get et
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Old 07-25-2004, 04:13 PM   #12
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You won't power much computer with 2.5A, certainly not an EPIA...
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Old 07-25-2004, 04:44 PM   #13
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Quote: Originally Posted by GingerPrince
You won't power much computer with 2.5A, certainly not an EPIA...

No you are right, I post this diagram because many ask for small power supply

witgh small change it give 5 Amp

The system I run at home plan to put i the car I power by a small switch power there giv 4.16 Amp
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Old 07-25-2004, 04:50 PM   #14
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Quote: Originally Posted by GingerPrince
You won't power much computer with 2.5A, certainly not an EPIA...

You can run a small Network fileserver base on EPIA 800 with 2.5" harddisk
19.23 Watt

Epia Power simulator
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Old 07-25-2004, 04:51 PM   #15
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OMG, R5 should never be 0, that would possibly POW the IC with the inrush to the gate capacitance, it should be closer to 10 ohms.
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