To enhance maintainability by providing a power supplying means provided with a switch which interrupts the conductor of either of a positive power line and a negative power line according to an incoming control signal, and a reverse connection monitoring means which outputs a control signal to interrupt a conductor containing a switch of the positive and negative power lines.
A monitoring circuit portion 8, a switch portion 15, and a diode 11 for preventing currents extending from a power circuit portion 6, are placed in the positive power line 9 of a power circuit portion 5. The diode 11 is connected with the switch portion 15 on the anode side and with a load 7 on the cathode side. The monitoring circuit portion 8, the switch portion 15, and a coil 17 are placed in a negative power line 10. The switch portion 15 is normally in ON state, and is turned OFF only when terminals 3a are reversely connected. The monitoring circuit portion 8 is connected between the power circuit portion 5 and a power circuit portion 6. Since it is unnecessary to replace a part after reverse connection as a result, a power supply with high maintainability is obtained.
JPH10336905A | 1998-12-18 | |||
JPH0865918A | 1996-03-08 |