I would like to start testing and reconditioning some electrical equipment and I'm wondering what device or devices I can use to out put a specified voltage/amperage either AC or DC.for instance I have an electric motor that needs 5v 20amps, and I require a device that would allow me to plug into a wall outlet and regulate the voltage and amps to the proper levels for testing this device.hopefully that makes sense, thanks
No, you cannot regulate voltage AND current at the same time. In your example, you apply a regulated 5 volts to the motor, and measure the current drawn, under load. It should be close to 20 amps. What you need are regulated DC power supplies to cover the range of the motors you are interested in. A regulated voltage supply with a current limit will do fine. Regulated AC supplies are more difficult, but I think all you need is an adjustable supply, for example, by use of an adjustable transformer (Variac) and other transformers to change the voltage, again, to the voltages of interest to you. .
if its AC you can use a variable speed drive or VoltPac but if ur talking DC then u need an adjustable power supply. You can build one or you can probably buy a more stable unit if you have the money to spend.
