REEL MOTOR CONTROL CIRCUIT

摘要

The control circuit of a reel motor (9) maintains a uniform tension of the tape in VTR. This control circuit of the reel motor has a tension detector (1) employing a digital signal method and is provided between a pinch roller and a winding reel, and the tension of tape is always maintained regardless of the oeprating mode of VTR. The reference input isgnal which maintains the constant tension of the tape and the digital signal which is outputed from the tension detector are compared in comparator (2) and supplied to adder (3). Also, the sampling frequency is applied to the enable port of latch circuit (4).