Patent ID: 8427084

Claim:
A control system operable for controlling a direction and speed of an electric motor, comprising: at least two variable duration pulse generators which produce output pulses at staggered intervals with respect to each other; a waveform generator to produce a waveform, said at least two variable pulse generators being operatively connected to said waveform generator; a variable control for controlling said at least two variable duration pulse generators to thereby vary a duration of said output pulses whereby said output pulses generated by said at least two variable duration pulse generators in response to said variable control comprise variable width pulses; power switch switches which interfaces with said motor, said power switch network producing power pulses responsive to a combination of said output pulses for application to said motor, said power switches being operable to produce power pulses comprising a power pulse duration which varies with said duration of said output pulses; and a logic circuit operable for combining said output pulses and producing control signals which control forward and reverse rotational direction and speed of said motor.