Circuit for inhibiting transition phenomenon in power supply uni

Details Circuit for inhibiting transition phenomenon in power supply uni Circuit for inhibiting transition phenomenon in power supply uni

1998-07-22

1999-12-21

Wong, Peter S.

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 21, 315387, H02M 324, H02M 3335, H01J 2956

Patent

active

060057890

ABSTRACT:
A circuit for inhibiting a transition phenomenon in a power supply unit is disclosed. When the power supply mode is shifted, a transition phenomenon is made not to appear in the operating power supplied to the load. The circuit includes a microcomputer which judges as to the presence or absence of horizontal and vertical synchronizing signals supplied from the computer system so as to vary the power in a stepwise form when shifting the power supply mode. In accordance with control signals of the microcomputer, a feedback level adjusting section reduces the error detected voltage in a stepwise form when the power is fed back from a second rectifying section through an error detecting section to a pulse width modulator (PWM) control section. Therefore, in accordance with the stepwisely decreasing error detected voltage, the pulse width modulator (PWM) control section reduces its output signals in a stepwise form, so that the power supplied to the load can be reduced in a stepwise form.

REFERENCES:
patent: 4073004 (1978-02-01), Chambers et al.
patent: 4156273 (1979-05-01), Sato
patent: 4634939 (1987-01-01), Dietz
patent: 4980811 (1990-12-01), Suzuji et al.
patent: 5329211 (1994-07-01), Sasaki et al.
patent: 5714843 (1998-02-01), Youn

Affiliated with

Also associated with

Rating

Circuit for inhibiting transition phenomenon in power supply uni does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for inhibiting transition phenomenon in power supply uni, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for inhibiting transition phenomenon in power supply uni will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-511580