* Real pulse width modulation for accurate, stable motor control * Controls DC motors from 3 to 50 volts - up to 10 Amps!
You see, controlling a DC motor's speed is not as easy as varying its supply voltage. The motor loses torque (power) as the voltage is lowered and finally stops rotating. The MSC1 uses a technique known as "Pulse Width Modulation" - PWM - to control speed. This is the same system used on electric cranes, buses and subway cars. With PWM, the motor receives full voltage whenever energized - however, the duration of the voltage changes; it's sort of like flipping an on/off switch very rapidly! The motor rotates smoothly and with full power - no matter what the speed. The MSC1 will control DC motors from 3 to 50 volts at up to 10 amps! Complete instructions detail how the PWM circuitry operates and some hook-up ideas. Assembly takes only an hour or two. Kit operates on 9 to 12 VDC and controls motor supply of 3 to 50 volts. Includes our custom case set measuring 5"W x 11/2"H x 51/4"D.
I wonder if this would work for me. I have been thinking lately that I *want* 10 Amps or less. Curiouser and curiouser ....
Yeah that PMW motor controller looks like it should work just watch out for the peak current flow not the average since the pass transistor is going to pop if too much current flows through it. I just think however that lower resistance and lower voltage would be better since it is the current (the flow of electrons) that separates the water into H and O and having higher voltage than the few volts it takes just makes more heat. Another way to use 12 volts directly is to setup 3 or 4 cells in series in separate containers dividing the voltage between them all.
I don't know about the mon-atomic Hydrogen - but taller plates in a taller container would produce more gas and electrolite flow vertically helping to knock off the gas bubbles as they rise to the top and may end up producing quite a circulating flow knocking all the bubbles loose from top to bottom.