초록 ▼

An energy-saving arrangement for a signal receiver that responds to intermittent incoming signals. The receiver is turned on periodically for short intervals so as to provide a low duty cycle during the standby intervals when there are no incoming signals. If an incoming signal is sensed during one

An energy-saving arrangement for a signal receiver that responds to intermittent incoming signals. The receiver is turned on periodically for short intervals so as to provide a low duty cycle during the standby intervals when there are no incoming signals. If an incoming signal is sensed during one of its “on”intervals, it remains on during the duration of the signal.

대표청구항 ▼

An oscillator powered by a power supply comprising A. a logic circuit comprising the cascaded combination of a Schmitt trigger and an inverter and having an input terminal and an output terminal, B. a transistor amplifier having an input terminal and an output terminal, C. a first capacitor connecte

An oscillator powered by a power supply comprising A. a logic circuit comprising the cascaded combination of a Schmitt trigger and an inverter and having an input terminal and an output terminal, B. a transistor amplifier having an input terminal and an output terminal, C. a first capacitor connected between said output terminal of said amplifier and said input terminal of said logic circuit, D. a second capacitor connected between the output terminal of the logic circuit and the input terminal of the amplifier, E. first impedance means connected between said power supply and said input terminal of said amplifier and, F. unidirectional second impedance means connected between the output terminal of said logic circuit and input terminal of said logic circuit, whereby: i. the output of said logic circuit switches between a first level and a second level, and ii. when said logic circuit output switches to the first level, a corresponding voltage change passed by said second capacitor terminates conduction by said amplifier, and iii. conduction by said first impedance means then changes the voltage on said second capacitor to initiate conduction by said amplifier, iv. initiation of amplifier conduction causing said first capacitor to apply a voltage change at said logic circuit input terminal, resulting in said second level of said logic circuit output, v. said second impedance means conducting during the occurence of said second level to apply a voltage change at said logic circuit input terminal, resulting in said first level of said logic circuit output.