Power supply apparatus for an electrical appliance
First Claim
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1. An apparatus, comprising:
- an infrared sensing circuit configured to generate an enable signal in response to receipt of an infrared control signal; and
a power supply circuit having an input coupled to receive said enable signal, said power supply circuit configured to generate a supply voltage;
wherein said infrared sensing circuit comprises;
a photodiode having an output;
a switch having a control terminal coupled to the photodiode output and a first conduction terminal configured to supply said enable signal;
a zener diode coupled between the control terminal of the switch and the first conduction terminal; and
a DC blocking capacitor coupled between the photodiode output and the control terminal of the switch.
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Abstract
A power supply apparatus includes a power supply circuit and a power-on circuit. The power-on circuit detects a remotely transmitted control signal and causes a transition of the power supply circuit to a turned on state. The power-on circuit includes a transducer configured to provide a power-on signal in response to the remote control signal. The transducer triggers transition to the turned on state through a switch driven by the power-on signal output from the transducer and arranged to supply a power supply circuit enable signal. A DC blocking capacitor is connected between an output of the transducer and a control terminal of the switch.
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Citations
15 Claims
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1. An apparatus, comprising:
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an infrared sensing circuit configured to generate an enable signal in response to receipt of an infrared control signal; and a power supply circuit having an input coupled to receive said enable signal, said power supply circuit configured to generate a supply voltage; wherein said infrared sensing circuit comprises; a photodiode having an output; a switch having a control terminal coupled to the photodiode output and a first conduction terminal configured to supply said enable signal; a zener diode coupled between the control terminal of the switch and the first conduction terminal; and a DC blocking capacitor coupled between the photodiode output and the control terminal of the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus, comprising:
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a remote signal sensing circuit comprising; a sensor configured to sense a remote control signal and generate an enable signal current at an output in response thereto; a switch having a control terminal coupled to the sensor output and a first conduction terminal configured to supply an enable signal in response to receipt of the remote control signal; a zener diode coupled between the control terminal of the switch and the first conduction terminal; and a DC blocking capacitor coupled between the sensor output and the control terminal of the switch; and a power supply circuit having an input coupled to receive said enable signal, said power supply circuit configured to generate a supply voltage in response to said enable signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification