초록 ▼

The system utilizes the conventional A. C. power line connected as a signal source and a shield about a sensor electrode mounted in a conventional wall box and coupled to a flip-flop circuit. When a body comes within operating range of the sensor, current flow is generated which operates the flip-fl

The system utilizes the conventional A. C. power line connected as a signal source and a shield about a sensor electrode mounted in a conventional wall box and coupled to a flip-flop circuit. When a body comes within operating range of the sensor, current flow is generated which operates the flip-flop and turns on an associated lamp. Associated circuitry may also be provided to turn the lamp off automatically and to perform other functions.

대표청구항 ▼

A control system for operating a utilization device comprising an A.C. power line including a high side and a ground side connected to ground, a circuit adapted to produce an output signal when it receives an input signal and having input terminal means and output terminal means, said utilization de

A control system for operating a utilization device comprising an A.C. power line including a high side and a ground side connected to ground, a circuit adapted to produce an output signal when it receives an input signal and having input terminal means and output terminal means, said utilization device being coupled to the output terminal means of said circuit, and capacitive input signal means coupled by a lead to said input terminal means and comprising a sensor electrode and a conductive shield surrounding said sensor electrode and said lead to shield said sensor from spurious signals, the high side of said A.C. power line being connected to said shield, said sensor electrode being accessible for capacitive coupling to a human body positioned adjacent thereto for generating input signals for said circuit.