公开(公告)号：EP0149312B1

公开(公告)日：1988-03-30

申请号：EP84307665.4

申请日：1984-11-07

Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.

Inventor： Walker, John David

IPC: H02M3/335

CPC classification number: H02M3/33546

公开(公告)号：EP0149312A1

公开(公告)日：1985-07-24

申请号：EP84307665.4

申请日：1984-11-07

Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.

Inventor： Walker, John David

IPC: H02M3/335

CPC classification number: H02M3/33546

Abstract: A switched mode power supply has a sense transformer (TX2) with three windings. A first (primary) winding (WD) is in series with the primary winding (WP1) of the power transformer (TX1). Current regulation of the output is provided via a second (sense) winding (WS). Voltage regulation of the output is provided by a further (third) winding (WC) being connected in parallel with the secondary winding (WP2) of the power transformer for producing isolated feedback of an output voltage error signal using the sense transformer (TX2) as a current summing transformer

公开(公告)号：EP0147040A1

公开(公告)日：1985-07-03

申请号：EP84307666.2

申请日：1984-11-07

Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.

Inventor： Walker, John David

IPC: H02M3/335

CPC classification number: H02M3/33546

Abstract: A switched mode power supply in which the power switch (TR1) is modulated by a resistance-capacitance oscillator (COM, R1-R5, CT). During each on-period of the switch (TR1) a secondary winding (WS) of a sense transformer (TX2) develops a unipolar sense voltage which is applied to a capacitor (CT) in the oscillator while it is charging so as to vary the charging time and hence the on-period, the off-period of the switch (TR1) being constant.

公开(公告)号：EP0147040B1

公开(公告)日：1988-03-23

申请号：EP84307666.2

申请日：1984-11-07

Applicant: THE GENERAL ELECTRIC COMPANY, p.l.c.

Inventor： Walker, John David

IPC: H02M3/335

CPC classification number: H02M3/33546