Apparatus for controlling power supply to electronic circuitry
First Claim
1. Apparatus for controlling the supply of power to electronic circuitry;
- said apparatus comprising;
a switched power supply for connection to said electronic circuitry;
automatic switch means enabling said switched power supply selectively to energize or de-energize said electronic circuitry;
a nominally continuous power supply;
reset signal generating means connected to said nominally continuous power supply for generating a reset signal in response to a rising edge of an output voltage of said nominally continuous power supply following an interruption of said output voltage;
power switch means;
reset means actuated by said reset signal;
switching circuit control means connected to said automatic switch means;
memory means connected to said switching circuit control means for memorizing the condition thereof and producing a memory output signal in response thereto; and
detecting means for detecting the condition of said power switch means and producing a detector output signal in response thereto;
said switching circuit control means being connected to said reset means, said memory means and said detecting means and generating a control signal for controlling the operation of said automatic switch means in joint dependence on said memory output signal and said detector output signal when said reset means is actuated.
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Accused Products
Abstract
A switched power supply is connected to electronic circuitry the supply of power to which is to be controlled. An automatic switch enables the switched power supply selectively to energize or de-energize the electronic circuitry. A nominally continuous power supply is also provided, and a reset signal generator is connected thereto for generating a reset signal in response to a rising edge of an output voltage of the nominally continuous power supply following an interruption of the output voltage. A power switch is provided, together with a reset device actuated by the reset signal and a switching circuit controller connected to the automatic switch. A memory is connected to the switching circuit controller for memorizing the condition thereof and producing a memory output signal in response thereto. A detector detects the condition of the power switch and produces a detector output signal in response thereto. The switching circuit controller is connected to the reset device, the memory and the detector and generates a control signal for controlling the operation of the automatic switch in joint dependence on the memory output signal and the detector output signal when the reset device is actuated.
36 Citations
10 Claims
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1. Apparatus for controlling the supply of power to electronic circuitry;
- said apparatus comprising;
a switched power supply for connection to said electronic circuitry; automatic switch means enabling said switched power supply selectively to energize or de-energize said electronic circuitry; a nominally continuous power supply; reset signal generating means connected to said nominally continuous power supply for generating a reset signal in response to a rising edge of an output voltage of said nominally continuous power supply following an interruption of said output voltage; power switch means; reset means actuated by said reset signal; switching circuit control means connected to said automatic switch means; memory means connected to said switching circuit control means for memorizing the condition thereof and producing a memory output signal in response thereto; and detecting means for detecting the condition of said power switch means and producing a detector output signal in response thereto; said switching circuit control means being connected to said reset means, said memory means and said detecting means and generating a control signal for controlling the operation of said automatic switch means in joint dependence on said memory output signal and said detector output signal when said reset means is actuated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- said apparatus comprising;
Specification