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Old 07-08-2003, 07:01 PM   #1
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Default REduce voltage

i have a puwer supply that suppose to have an output of 12v/7amp but when i connects it to a charger it said the output is at around 16-16 volt, not sure how much current it have. Anyway i want to reduce the voltage to about 12-13 volt so i can use it with my charger.
Does anyone know a cheap way of doing this ? i prefer to buy a device that is already design to do this...
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Old 07-09-2003, 05:26 AM   #2
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ohh come one..some one plz help/////
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Old 07-09-2003, 06:11 AM   #3
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Sounds like you have a low-quality power supply. A quality regulated 12v supply will normally put out either 12v or 13.8v - 16 is way over. All I can suggest is returning your supply, or buying a better one.
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Old 07-09-2003, 09:55 AM   #4
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but there has to be a way to down your voltage
if there's a way to make it go higher like a comp supply. you use resistors.
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Old 07-09-2003, 05:47 PM   #5
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Quote:
Originally posted by sosidge
Sounds like you have a low-quality power supply. A quality regulated 12v supply will normally put out either 12v or 13.8v - 16 is way over. All I can suggest is returning your supply, or buying a better one.
hehehe...thats not a cheap solutions
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Old 07-09-2003, 05:56 PM   #6
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You should be able to adjust the voltage, open it up and see if there is anything you can adjust it with underneath the casing. I used to use a 5 dollar 4 volt 20 amp power supply for powering my lathes (wish I could find another one, they were nice, and cheap) but even on that I could adjust the voltage a bit, and it was as cheap as you can get.
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Old 07-09-2003, 06:06 PM   #7
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nah...nothing to reduce the voltage..its fix..i know there is such a thing call voltage reggulator but dont know how to use it...
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Old 07-09-2003, 06:12 PM   #8
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you prolly have a bad IC chip, this is what regulates the voltage to consistent levels, or you might have some bad pass transistors(which i doubt bc the voltage drops when you apply a load if it is bad). Anyhow, if you have a volt meter you can open it up and test each component, IC, Capacitors, etc... just be careful, if you kill yourself its not my fault.
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Old 07-09-2003, 06:20 PM   #9
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thats going to be a bit hard to do since i dont know wat each component does wat...and i'm not going to die trying
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