Power supply with power factor correction and protection against

Details Power supply with power factor correction and protection against Power supply with power factor correction and protection against

1995-03-23

1997-04-01

Sterrett, Jeffrey L.

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

323207, 323282, G05F 1613

Patent

active

056170130

ABSTRACT:
In a power supply with a boost pre-regulator and power factor correction devices the voltage induced in an auxiliary winding magnetically coupled to the inductor of the pre-regulator and rectified by a diode bridge charges an integrating capacitor, shunted by a discharging resistor, to a voltage which compared with predetermined reference voltages allows to detect and to signal anomalous operative conditions, such as overload or unoperativeness of the power factor correction devices for the execution of suitable intervention procedures.

REFERENCES:
patent: 4316136 (1982-02-01), Saxarra et al.
patent: 5001620 (1991-03-01), Smith
patent: 5073850 (1991-12-01), Pace
patent: 5134355 (1992-07-01), Hastings
patent: 5180964 (1993-01-01), Ewing
patent: 5359274 (1994-10-01), Bandel
patent: 5359281 (1994-10-01), Barrow et al.
patent: 5418709 (1995-05-01), Lukemire
patent: 5495164 (1996-02-01), Heng
patent: 5502370 (1996-03-01), Hall et al.
patent: 5508602 (1996-04-01), Borgato et al.
`Linear Integrated circuits data and applications handbook` Dec. 1990, Unitrode Corp., Merrimack, USA Application note U-125: "Power factor correction with the UC3854" by Claudio de sa e Silva (pp. 9-287-9-296).
Electronics & Wireless World, vol. 99, No. 1693, Dec. 1993, Surrey GB pp. 1034-1035, XP000421031 `Power factor controller`.

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