Author Topic: ok i need voltage!  (Read 1875 times)

Offline folklord36

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ok i need voltage!
« on: June 27, 2008, 07:29:06 PM »
ok i need to pull about 10 volts from the psp i was thinking can i just wire to two 5 volt spots and then to the VS of my device or do i need like a cap to store the energy of both and draw off the cap? just a theory but i need to pull 10 volts from the psp.

Offline gr8npwrfl

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Re: ok i need voltage!
« Reply #1 on: June 27, 2008, 07:32:48 PM »
Cant do it that way.

The only way you could do that would be to have +5 volts and - 5 volts. Then bridging the two would give you ten volt potential.

You will have to build a small circuit to create a voltage doubler.
There are some 8 pin chips that will do it for you depending on how much current.

How much current do you need ?


Offline folklord36

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Re: ok i need voltage!
« Reply #2 on: June 27, 2008, 07:48:56 PM »
i need ten volts. dang i was hopeing i can do it with just two +5volt points bridged last thing i need is another pcb in my psp im running out of room! lol but maybe that chip will help me i was looking at homemade inverters but couldnt find one to do 5volts to 10 volts. i found one that doubles voltage but it was too big. any other simpler suggestions?

Offline GhoSt

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Re: ok i need voltage!
« Reply #3 on: June 27, 2008, 07:50:39 PM »
you could get a voltage convertor to go from 5dc to 10dc (kinda like a invertor but going dc to dc) but a few problems cas it will drain ur battery and im not sure u will fit it in the psp.
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Offline gr8npwrfl

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Re: ok i need voltage!
« Reply #4 on: June 27, 2008, 07:56:21 PM »
Here is the simplest circuit you can do



It uses a simple 555 timer and will give you up to 200 ma



Offline folklord36

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Re: ok i need voltage!
« Reply #5 on: June 27, 2008, 09:10:01 PM »
hmmm simple enoughf just gota order a few things that they dont have at radio shack

Offline 00G

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Re: ok i need voltage!
« Reply #6 on: June 28, 2008, 08:42:32 AM »
You could disassemble a cell phone charger and change a few things to get step up from 5 volts to 10.  If you don't need much amperage, the single chip switching regulator should be the easiest.  The 555 could do it, but if the voltage has to be precise, the chip like below should be perfect.  I believe there is one with very minimal external parts needed (like no coils).  I am not sure if it is this, but it pretty much depends on amperage requirements.

Maxim Regulator

Offline ryan0

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Re: ok i need voltage!
« Reply #7 on: June 29, 2008, 04:08:09 AM »
you could disect a usb step up converter and that'll save u having to buy and assemble the circuit
Derp.

Offline Stormy

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Re: ok i need voltage!
« Reply #8 on: June 30, 2008, 05:20:14 PM »
I need to solve a similar problem.  So in reference to the above schematic would a NE555DG4 timer from Jamco work?  I can't find the UI555 time.

Thanks

Offline gr8npwrfl

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Re: ok i need voltage!
« Reply #9 on: June 30, 2008, 06:24:33 PM »
same part different manufacturer.

yep your all set to go



 

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