Ac - How does a hair dryer change its motor speed? Diagram - I found your schematic mainly complicated, so i redrew it. In preferred, attempt do draw excessive voltage elements on the top and coffee voltage ones on the bottom facet of the schematic. In this precise case the tool is ac powered, so pick an orientation as you want however stay with it. Indicators (now not present here) have to typically drift from left to right. Sw1 is a 3 role rocker switch, version sr-seventy one, feature type "okay". Its three positions are off(open circuit) - fan low(right facet handiest) - fan high(each right and left aspects linked to not unusual).
Request for assist: does everybody realize a way to get rid of the heating element from a hair dryer to have it simplest blow cold/cool air?? i've opened it up and there are lots greater wires than i expected.? i have simply sufficient electrical knowledge to be a touch bit above dangerous, so i notion it would be first-class to invite for assist.? thanks!. For lower speed or heater level the ac mains voltage is fed via a diode to each of the loads. The diode has the feature in that it most effective conducts current in one path so simplest the fine elements of the ac voltage waveform makes it to the motor or heater. The negative elements of the ac voltage waveform are cut off by using the diode and so hence do no longer deliver power to the weight. The net effect of that is that the motor or heater get about 1/2 the power and therefore the motor turns slower or the heater does no longer emit as tons warmness.