Load-protection control circuit of power supply

Details Load-protection control circuit of power supply Load-protection control circuit of power supply

2007-08-21

2007-08-21

Sircus, Brian (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S098000, C307S139000, C307S141800, C700S293000

Reexamination Certificate

active

11049745

ABSTRACT:
A load-protection control circuit of a power supply, which applies to the power supply that has a maximum power-limiting function. The power supply includes a power transformation circuit which outputs a direct current to drive loads and a control circuit which can switch the power transformation circuit electrically coupled to a power-protection circuit that has a voltage representing reference power. The direct current voltage driving the load is compared with the voltage representing reference power by the power-protection circuit to output a protection signal to the control circuit for switching the power transformation circuit. The power-protection circuit and the control circuit are electrically connected to a switcher circuit connected to a switch, wherein the switch can switch the switcher circuit to be in open-circuit or close-circuit state in order to determine whether the protection signal is transmitted to the control circuit. Thereby, the objective of load-protection control is accomplished.

REFERENCES:
patent: 4536814 (1985-08-01), Theisen et al.
patent: 5185734 (1993-02-01), Call et al.
patent: 5438499 (1995-08-01), Bonte et al.
patent: 6104583 (2000-08-01), Wynn et al.
patent: 2003/0210007 (2003-11-01), Hsu et al.
patent: 2005/0002133 (2005-01-01), Nam

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