Circuit arrangement having a power supply unit

Details Circuit arrangement having a power supply unit Circuit arrangement having a power supply unit

2004-12-28

2010-11-23

Paladini, Albert W (Department: 2836)

Electrical transmission or interconnection systems

Plural load circuit systems

Anticoupling of load circuits through same source

C323S234000

Reexamination Certificate

active

07839015

ABSTRACT:
The circuit arrangement has a power supply unit, a mains switch and a switching element, for example a relay, that bridges a first switching contact of the mains switch. A load is coupled to a control terminal of the switching element, so that when the control voltage is turned off for the purpose of opening the switching element, the load is simultaneously turned off. The circuit arrangement contains a microprocessor, in particular, which is supplied with an operating voltage by the power supply unit, and which is coupled to the control terminal of the switching element for control of the switching element. The load is a fan, for example, which is switched off in a delayed manner when the circuit arrangement is switched off by means of the mains switch.

REFERENCES:
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patent: 5592034 (1997-01-01), Felmus et al.
patent: 6420906 (2002-07-01), Kohda
patent: 6500152 (2002-12-01), Illi
patent: 6650552 (2003-11-01), Takagi et al.
patent: 2001/0039626 (2001-11-01), Jauert
patent: 1326260 (2001-12-01), None
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patent: 1120894 (2001-08-01), None
patent: 0380485 (1991-08-01), None
patent: 04053943 (1992-02-01), None
patent: 0487565 (1992-03-01), None
Search Report Dated Apr. 8, 2005.

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