Micro-power stand-by mode
View Patent ↗A micro-power stand-by system is provided which minimizes power supplied to and the utilization of a stand-by power supply circuit and the resultant production of electro-magnetic interference (EMI) during normal electronic device operation. In one embodiment, the stand-by power supply circuit includes at least one capacitor in electrical communication with at least one stand-by relay, with the capacitor electrically connected to an AC line. The capacitor powers the stand-by power supply circuit and the stand-by relay. At least one switch is located a prearranged distance from a main power supply circuit, and is electrically connected to the AC line and the stand-by relay to provide normal operation for the main power supply circuit. In another embodiment, the switch includes a stand-by switch and a main power switch which provide an inrush current limiting resistor during initial power-on for safety reasons and a bypass of the inrush current limiting resistor during normal operation, respectively.
1. A television comprising:
a stand-by power supply circuit including at least one capacitor in electrical communication with at least one stand-by relay, said capacitor electrically connected to an AC line, said stand-by relay electrically connected to a MOS decoder, said capacitor configured to power said stand-by power supply circuit and said stand-by relay; and
at least one switch located prearranged distance from a main power supply circuit, said switch electrically connected to said AC line and said stand-by relay, wherein said main power supply circuit comprises at least one main power relay, said main power relay electrically connected to said switch, said stand-by relay configured to operate said switch to connect said AC line to said main power supply circuit.
2. A television in accordance with claim 1 , wherein said main power supply circuit configured to power said main power relay once said AC line is initially connected to said main power supply circuit, said main power relay configured to operate said switch and continue connection between said AC line and said main power supply circuit.
3. A television in accordance with claim 1 , wherein said stand-by relay is a magnetically latched stand-by relay.
4. A television in accordance with claim 1 , wherein said main power relay is a magnetically latched main power relay.
5. A television in accordance with claim 1 , wherein said switch comprises a stand-by switch and a main power switch, said stand-by relay configured to operate said stand-by switch and said main power relay configured to operate said main power switch.
6. A micro-power operation system comprising:
a stand-by power supply circuit including at least one capacitor in electrical communication with at least one stand-by relay, said capacitor electrically connected to an AC line, said capacitor configured to power said stand-by power supply circuit and said stand-by relay; and
a main power supply circuit including at least one switch in electrical communication with at least one main power relay, said switch electrically connected to said AC line.
7. A micro-power operation system in accordance with claim 6 , further comprising an inrush current limiting resistor located between said AC line and said switch.
8. A micro-power operation system in accordance with claim 7 , wherein said stand-by relay configured to operate said switch to connect said AC line to said main power supply circuit and said inrush current limiting resistor configured to handle a predetermined current.
9. A micro-power operation system in accordance with claim 8 , wherein said main power supply circuit configured to power said main power relay once said AC line is initially connected to said main power supply circuit, said main power relay configured to operate said switch and continue connection between said AC line and said main power supply circuit.
10. A micro-power operation system in accordance with claim 6 , wherein said switch comprises a stand-by switch and a main power switch, said stand-by relay configured to operate said stand-by switch and said main power relay configured to operate said main power switch.
11. A micro-power operation system in accordance with claim 10 , further comprising an inrush current limiting resistor located between said AC line and said stand-by switch, said main power switch configured to bypass said inrush current limiting resistor and connect said AC line to said main power supply circuit.
12. A micro-power operation system in accordance with claim 11 , wherein said main power supply circuit configured to power said main power relay once said AC line is initially connected to said main power supply circuit via said stand-by switch, said main power relay configured to operate said main power switch and continue connection between said AC line and said main power supply circuit.