Inrush current limiting circuit and electronic device using...

Details Inrush current limiting circuit and electronic device using... Inrush current limiting circuit and electronic device using...

2011-03-29

2011-03-29

Nguyen, Hai L (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Delay controlled switch

C327S401000

Reexamination Certificate

active

07915945

ABSTRACT:
An inrush limiting circuit is connected between an external power source and a plurality of capacitors, and includes a delay trigger signal generator, a plurality of reversing circuits and a plurality of transmission gates. The delay trigger signal generator is connected to the external power source, to receive external power signals and generate a plurality of delay trigger signals. The reversing circuits are connected to the delay trigger signal generator, to reverse the delay trigger signals and output a plurality of the reversed delay trigger signals. The transmission gates are correspondingly connected to the delay trigger signal generator, the reversing circuits and the capacitors, to turn on respectively at different times based on the delay trigger signals and the reversed delay trigger signals, to cause the external power source to charge the capacitors at the different times so as to avoid an inrush current.

REFERENCES:
patent: 5424669 (1995-06-01), Teggatz et al.
patent: 7782122 (2010-08-01), Tsai et al.

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