| 摘要 |
PURPOSE:To simplify the constitution of a control circuit and to shorten the time during which the output of the circuit is controlled to the set value, by providing a pair of separate photoelectric switches to an analog measuring instrument and using the shift of a pointer to an information source of the control circuit. CONSTITUTION:A certain level of input is applied to a circuit to give an automatic change to the control element at a comparatively high speed. When a pointer 9 rises up to a position P1, a signal P1 is transmitted from a measuring instrument. Then the gate of a distance counter opens, and the reference clock starts counting. The signal P1 is also transmitted to a control element driving circuit via the distance counter to retard the changing speed of the control element. Thus the pointer 9 rises up at a comparatively low linear speed. Furthermore the output rises up to exceed the set value P0, and the pointer 9 goes up to a position P2. Thus a signal P2 is transmitted. As a result, the gate of the distance counter is closed to complete the counting of the reference clock. |
