Drum motor controller using microcomputer for intermittent slow VTR

An intermittent slow controller, of a magnetic recording and reproducing apparatus, for intermittently driving a magnetic tape by alternately supplying activation and braking pulses to a capstan motor and reading a video signal by a magnetic head mounted to a rotating drum, the intermittent slow controller comprising:

• drum controlling means for controlling a voltage for driving the rotating drum;
• a drum control PWM (pulse width modulated) output circuit for outputting a signal having a pulse width in accordance with an output from the drum controlling means;
• and
• a microcomputer for controlling, through pulse width modulation, voltages for the capstan motor and a motor for driving the rotating drum;
• wherein, in response to an instruction from the microcomputer during the intermittent driving, the voltage for driving the drum is applied with the pulse width greater, by a predetermined value, than that for normal reproduction and concurrently with activation of the capstan motor.