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Topic: Powering 3 servos & what's everyone using on their workbench? (Read 2 times) previous topic - next topic

TopScouser

Just a quick question to anyone,

Ive converted an old 300W computer ATX to a bench PSU. I have got +5V, -5V, +12V, -12V, +3.3V. At 5V it gives out around 20A. What would happen if i was to connect a servo to that? would it damage the servo or only draw the current that it needs??

retrolefty


Just a quick question to anyone,

Ive converted an old 300W computer ATX to a bench PSU. I have got +5V, -5V, +12V, -12V, +3.3V. At 5V it gives out around 20A. What would happen if i was to connect a servo to that? would it damage the servo or only draw the current that it needs??


It will only draw the current it demands. Ohm's law says the resistance of the load (times the voltage source) is what determines the current flow. That has no bearing to what the maximum current capacity of the supply is as long as the load draws equal or less then that maximum value.

Lefty


TopScouser

I prob should have know that haha, anyway thanks a lot Lefty, your a hero

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