I want to make a 12 volt liquid pump go slower but because it has to pump some very thick liquids I'm afraid I'll burn it if I just set the voltage back and I can make it go slower if it pulsates. So I thought of making a powersupply that pulsates short pulses of 12 volt to slow it down and use an arduino to control it. I was thinking of using the pwm of the arduino to drive a transistor of an old amplifier to pulsate the power with a pot to set the speed.
so it would be like this arduino->transistor wit old computer psu->pump
A is this a good plan to pulsate the power any way? B What is the best way to do it?
Thanks in advance Wybren
PS if you think dude that's all wrong please tell me I'm quite new to this.