Power supply with a feedback circuit relieving spikes

Details Power supply with a feedback circuit relieving spikes Power supply with a feedback circuit relieving spikes

2007-11-15

2010-12-14

Sterrett, Jeffrey L (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

Reexamination Certificate

active

07852649

ABSTRACT:
In a feedback circuit of a power supply, an electrical level of an output voltage is stabilized corresponding to changes of an electrical level of a pulse width modulation signal, and effects, which are caused by spikes, on passive elements are decreased to a lowest degree. The electrical level of the output voltage is stabilized by storing a voltage corresponding to a low-to-high electrical level of the PWM signal with a capacitor, by discharging the stored voltage with a high-to-low electrical level of said PWM signal, and by regulating a discharging path of the stored voltage with a diode, which is not conducted. The abovementioned disposition may be utilized on various power-consuming devices, a duty cycle of each of which is controlled with a PWM signal, for stabilizing output voltages of said power-consuming devices, and for reducing effects, which are caused by spikes, on passive elements inside said power-consuming devices.

REFERENCES:
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patent: 2006/0126367 (2006-06-01), Hesterman
patent: 2009/0190382 (2009-07-01), Usui
patent: 2009/0262562 (2009-10-01), Yang

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