| T O P I C R E V I E W |
| Darkthero |
Posted - Nov 05 2009 : 12:50:16 AM
I have a 400 watt power supply that i have converted to a Bench power supply (bought power supply for $11 :P) but anyway.. i need some help controlling the amperage it exerts.
Here is my model ( http://www.imicro.com/item.php?item=PS-IM400W )
my outputs are +3.3V @ 30A; +5V @ 28A; +12V @ 26A; -12V @ 0.8A
and i would like to be able to use 16-24v 2-5 amps (for my (secret)Project) and mabey still use my original voltages/amperages
i have seen voltage controllers through google but thats not exactly what im asking for. just less amperage. and i know about ohms law and how it will affect my voltage.
Anything will help and thanks
(Edit...Move to Power Supply) |
| 4 L A T E S T R E P L I E S (Newest First) |
| Aaron Cake |
Posted - Nov 08 2009 : 11:10:27 AM
You know that your circuit will only draw the amount of current it needs, right? That is, if you have a 1000A supply and your circuit is rated at 1A, the circuit will only draw 1A not be blown up by 1000A. |
| Darkthero |
Posted - Nov 05 2009 : 6:34:08 PM
nvm i got it about 2.8 thanks for the help boron |
| Darkthero |
Posted - Nov 05 2009 : 4:17:23 PM
ok im having a hard time trying to figure out how much resistance i would need to bring it down from 26 amps to 4 amps |
| boron |
Posted - Nov 05 2009 : 10:16:22 AM
Ohm's law will determine the amount of current that will flow. Unless your supply is a constant current source, the current that will flow will be dependant on the voltage and the load.
If you are wishing to limit the amount of current being given to a load, like when powering an LED, then simply add a current limiting resistor in series. |
