Automatic capacitor discharge for power supplies

Details Automatic capacitor discharge for power supplies Automatic capacitor discharge for power supplies

2007-04-03

2007-04-03

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S053000

Reexamination Certificate

active

10843498

ABSTRACT:
In a DC power supply or a battery charger, plural output filter capacitors remain highly charged after the load is removed and the converter is turned off. A transistor connected across the capacitors is non-conductive during normal power supply operation and a bleed resistor connecting the transistor to the output capacitors is not in the circuit during normal power supply operation. When the power supply is turned off and the load is removed, the transistor is automatically rendered conductive with the removal of the pulsed output of the power supply's power transformer to the transistor, with the energy stored in the capacitors safely and quickly discharged to the output return via the bleed resistor which is placed in circuit by the conducting transistor.

REFERENCES:
patent: 4275436 (1981-06-01), Peterson
patent: 4449177 (1984-05-01), Kozai et al.
patent: 4962354 (1990-10-01), Visser et al.
patent: 5426579 (1995-06-01), Paul et al.
patent: 6301131 (2001-10-01), Yoshida
QuicklyDischarge Power-Supply Capacitors; Electronic Design News, Jul. 5, 2001 edition, p. 132;Stephen Woodward; University of North Carolina, Chapel Hill, NC.

Affiliated with

Also associated with

Rating

Automatic capacitor discharge for power supplies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic capacitor discharge for power supplies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic capacitor discharge for power supplies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3760719