| 摘要 |
A circuit which is responsive to sixty cycle voltage coupled to the circuit by a human body from a proximate 60 cycle power line. An input terminal when touched by a person's finger has coupled into it a 60 cycle voltage which is amplified and causes the electronic circuitry to assume either a conducting or non-conducting state at its output which is maintained after removal of the finger from the terminal. The output of the circuit is connected to a controlled device which is controlled by the circuit output state.
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