Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1997-07-31
1999-11-30
Wong, Peter S.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 56, 323902, 348730, H02M 3337
Patent
active
059953845
ABSTRACT:
A switched-mode power supply circuit having an operating mode and a stand-by mode, includes a functional ON/OFF switch. The switched-mode power supply circuit includes a transformer and a controllable switch connected to a primary winding of the transformer for switchably connecting the primary winding to a source of d.c. voltage. In the stand-by mode, based on a detected voltage level at an input of a controller IC, the switched-mode power supply circuit is arranged to switchable connect the primary winding to the d.c. voltage source in bursts which occur at a low frequency. By switchably connecting this input to a power source for the switched-mode power supply circuit, the controller IC detects the absence of this power source, and turns off the switched-mode power supply circuit allowing a minimum current consumption by the switched-mode power supply circuit.
REFERENCES:
patent: 4688159 (1987-08-01), Marinus
patent: 5812383 (1998-09-01), Majid et al.
"Mixed Frequency Mode Green PWM Controller", No. MC44603, Motorola Semiconductor Technical Data, pp. 1-30, Feb. 28, 1995.
Majid Naveed
Mobers Tom M.G.
Seinen Erwin G.R.
Goodman Edward W.
Jardieu Derek J.
Philips Electronics North America Corporation
Wong Peter S.
LandOfFree
Functional on/off switch for switched-mode power supply circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Functional on/off switch for switched-mode power supply circuit , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Functional on/off switch for switched-mode power supply circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1681464