Pulse width modulator for step motor

Claim 1

A MOTOR CONTROLLER FOR ACCEPTING MOVE COMMAND SIGNALS AND ALTERNATELY ENERGIZING THE WINDINGS OF A MULTIWINDING MOTOR WITH CONSTANT CHARGE SIGNALS REGARDLESS OF VARIATIONS IN THE CONTROLLER CIRCUIT PARAMETERS AND OF FLUCTUATIONS IN AN ENERGIZATION UNREGULATED VOLTAGE SUPPLY COUPLED THERETO, THE COMBINATION COMPRISING: CIRCUIT MEANS INCLUDING VOLTAGE REGULATING MEANS COUPLED TO THE UNREGULATED SUPPLY, SAID CIRCUIT MEANS DISPOSED TO ACCEPT THE MOVE COMMAND SIGNALS AND GENERATE REGULATED PULSES IN RESPONSE TO THE MOVECOMMAND SIGNALS; TIMING CIRCUIT MEANS COUPLED TO SAID CIRCUIT MEANS TO ACCEPT SAID REGULATED PULSES THEREFROM AND GENERATE TIMED OUTPUT PULSES HAVING TIME DURATIONS REPRESENTATIVE OF THE UNREGULATED VOLTAGE SUPPLY FLUCTUATIONS; AND POWER OUTPUT CIRCUIT MEANS COUPLED TO THE TIMING CIRCUIT MEANS AND RESPONSIVE TO THE TIMED PULSES, AND POWER OUTPUT CIRCUIT MEANS BEING COUPLED TO THE MOTOR MULIT-WINDINGS TO ALTERNATELY ENERGIZED SAME WITH THE CONSTANT CHARGE SIGNALS IN RESPONSE TO THE TIMED PULSES INTRODUCED TO THE POWER OUTPUT CIRCUIT MEANS.