Hello I'm currently studying an engineering course at college and for this I'm required to complete a project. Knife sharpener. Two spinning cutting tools driven by individual motors. I'm wanting to power two small low voltage dc motors from a 230v ac supply. There will be one main on/off switch, a variable speed switch (most likely a variable resistor of sorts) and two roller switches that activate the mechanism. Only one roller switch will be needed to activate the motors but at times both switches will be on. I intending on using a phone charger like plug which will in turn plug in to the main device. A power supply unit will then power the motors. What I'm struggling with (I think) are the basic numbers. If I were to use 12v motors could I provide enough current from a 1000mA charging plug to get the motors going? I don't know what maths I need to use. Ta. Bob.