EP 0087541 B1 19890503 - POWER SUPPLY CIRCUIT AND TRANSMISSION DEVICE USING SUCH A POWER SUPPLY CIRCUIT
Title (en)
POWER SUPPLY CIRCUIT AND TRANSMISSION DEVICE USING SUCH A POWER SUPPLY CIRCUIT
Publication
Application
Priority
EP 82430005 A 19820225
Abstract (en)
[origin: US4482815A] A back-up voltage source useful over a comparatively long time interval during a power outage or voltage fluctuation is described. A circuit for adjusting the position of a voltage difference available at the back-up supply outputs is described. A potential difference appearing at the terminals of a floating voltage source is connected to a reference circuit for generating a voltage reference from the difference of potential. A voltage follower connected to the reference and to a second voltage source is employed to cause the voltage follower to reposition the potential difference of the supply so as to force the voltage reference to a level equal to the second voltage source.
IPC 1-7
IPC 8 full level
G05F 1/56 (2006.01); G05F 1/585 (2006.01)
CPC (source: EP US)
G05F 1/585 (2013.01 - EP US)
Citation (examination)
- ELECTRONIC ENGINEERING, vol.50, no.603, mars 1978, Londres (GB). D.J. BATTISON: "A differential power supply converter", page 19
- IBM TECHNICAL DISCLOSURE BULLETIN, vol.14, no.1, juin 1971, New York (US). R.A. TENLEY: "Power line disturbance support circuit", pages 68, 69
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0087541 A1 19830907; EP 0087541 B1 19890503; DE 3279671 D1 19890608; JP S58154020 A 19830913; US 4482815 A 19841113
DOCDB simple family (application)
EP 82430005 A 19820225; DE 3279671 T 19820225; JP 21478782 A 19821209; US 46454283 A 19830207