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5V DC to 6V DC

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CitznFish:

--- Quote from: saint on November 16, 2003, 11:58:48 am ---I just can't leave well enough alone :)


--- Quote from: dhansen on November 16, 2003, 03:02:03 am ---Hello,

Wasn't there a separate audio forum earlier today?  When did these get combined?  


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Good Grief Carlie Saint!    ;)

Macros:
Hi,

I have a similar situation except I need to go from 12 volts to 9 volts to power my audio amp. The amp requires 9 volts .7 amps. I've tried feeding it 5 and 12 volts from my powersupply but it didn't like that much. Originally, I was using the ac adapter but it created a magnetic field causing my monitor to swim unless the refresh rate was exactly 60hz to coincide with the frequency of ac power.

I guess I'll have to order a voltage regulator like a LM2940T-9.0 from digi-key. It's $6 dollars for one but shipping will be $12, so I'll have to pad my order with some other stuff.

Macros

StephenH:
You can probably get a replacement 6V adapter at Radio Shack, or an electronic supply store.

MrDT:

--- Quote from: Macros on December 03, 2003, 02:11:31 pm ---Hi,

I have a similar situation except I need to go from 12 volts to 9 volts to power my audio amp. The amp requires 9 volts .7 amps. I've tried feeding it 5 and 12 volts from my powersupply but it didn't like that much. Originally, I was using the ac adapter but it created a magnetic field causing my monitor to swim unless the refresh rate was exactly 60hz to coincide with the frequency of ac power.

I guess I'll have to order a voltage regulator like a LM2940T-9.0 from digi-key. It's $6 dollars for one but shipping will be $12, so I'll have to pad my order with some other stuff.

Macros



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It might be worth trying it on 7 volts. The 7 volt trick was initially used by modders who wanted to quieten their fans, simple instructions on how to do this can be found here: http://www.cpemma.co.uk/7volt.html

I don't know if it'll work for you (due to me being too dumb to work out the current you'd get), but it might be worth a try before you go off and buy some stuff you might not need ;)

Macros:
I knew about the 7 volt trick but I was a little apprehensive about using it with the speaker amp's circuit. It's fine for something simple like power to a fan. I ended up buying parts locally to make up a circuit using a 7809 fixed voltage regulator. I bought enough parts to make 5 of these for less than $12.

It's a pretty simple thing to do, here is a schematic.

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