DETECTING CIRCUIT OF END AND START OF TAPE

摘要

The circuit without controlling the reference voltage to compare with the sensor output to detect the start point of the tape includes a voltage buffer generating the sensor signal, a low-pass filter(20) generating the reference voltage, and a Schmitt trigger(300) comparing the sensor signal and the reference voltage to detect the start point. To detect the stop point, a circuit of the same structure is needed for one more.