REEL SERVO SYSTEM OF VIDEO TAPE RECORDER

摘要

A servo system of reel consists of a system controller(1), a mode selecting circuit(2) providing mode signals according to a signal of the system controller, a switching circuit(4) which changes the rotating direction of the reel motor(M) with a control pulse for forward or backward mode, and a sample-and-hold circuit(5) for picture searching mode. The control pulse is generated in proportion to the speed of the motor. The relay(RL1) is replaced for a IC and a power transistor to reduce the cost.