| 摘要 |
PURPOSE:To control a load at the prescribed level from an arbitrary place by commonly connecting an operation diode connected in series with an operation switch and a control diode to an AC power source line by a circuit having a plurality of controllers. CONSTITUTION:Operation diodes D1-D3 having the prescribed direction and operation switches S1-S3 are connected between power lines 5-7 connected with an AC power source, and light emitting diodes LD1-LD3 having the prescribed direction are inserted to the lines 5, 6. Light emitting signals of the diodes LD1-LD3 are connected through photocouplers Q1-Q3 with control signal generating light emitting diodes LD4-LD7. The diodes LD4-LD7 couple photocouplers Q4-Q7 in the power supply controller of loads Z1-Z4. Thus, when the switch S1 is, for example, closed only the diode LD1 emits a light to allow the LD4, LD5 to emit lights. Accordingly, the loads Z1, Z2 can be simultaneously turned ON. |
