Abstract: A current inductive timer socket comprises: a principle relay circuit, a reed relay circuit, a plurality of diodes, a reed relay and a resistance, a counter circuit, a holding circuit, a time switch circuit and amplification circuit. When the electric appliance is in use, a signal of voltage drop produced at both ends of the rated resistance will be amplified by the operational amplifier and then transmitted to the counter circuit and an overload detecting circuit, making the counter circuit start to count automatically, and thus time operation is carried out. Further, when electric appliance is overloaded or in the case of short circuit, the power source can also be cut off automatically.

Abstract: A current inductive timer socket comprises: a principle relay circuit 1, a reed relay circuit, a plurality of diodes, a reed relay and a resistance, a counter circuit, a holding circuit, a time switch circuit and amplification circuit. When the electric appliance is in use, a signal of voltage drop produced at both ends of the rated resistance will be amplified by the operational amplifier and then transmitted to the counter circuit and an overload detecting circuit, making the counter circuit start to count automatically, and thus time operation is carried out. further, when electric appliance is overloaded or in the case of short circuit, the power source can also be cut off automatically.

Abstract: A current inductive timer socket comprises: a principle relay circuit including an output relay and a voltage input terminal, a reed relay circuit including a capacitor, a plurality of diodes, a reed relay and a resistance, a counter circuit including a DC rectifier, seven series-connected counters, and a time select switch, a holding circuit including a neon light, a photodiode, an operational amplifier, a transistor, a diode and a resistance, a time switch circuit including three time switches, and three series-connected exciting transistors, and an inductive and amplification circuit including a transformer parallel-connected to a rated resistor, a set of two-stage operational amplifiers, a resistance, and a capacitor.

Abstract: A current inductive timer socket comprises: a principle relay circuit including an output relay and a voltage input terminal, a reed relay circuit including a capacitor, a plurality of diodes, a reed relay and a resistance, a counter circuit including a DC rectifier, seven series-connected counters, and a time select switch, a holding circuit including a neon light, a photodiode, an operational amplifier, a transistor, a diode and a resistance, a time switch circuit including three time switches, and three series-connected exciting transistors, and an inductive and amplification circuit including a transformer parallel-connected to a rated resistor, a set of two-stage operational amplifiers, a resistance, and a capacitor.