EP 0462314 B1 19940928 - Circuit arrangement to supply an earthed load with load independent current.
Title (en)
Circuit arrangement to supply an earthed load with load independent current.
Title (de)
Schaltungsanordnung zur Speisung eines geerdeten Verbrauchers mit einem eingeprägten Strom.
Title (fr)
Circuit pour alimenter des charges mises à la terre avec courant indépendant de la charge.
Publication
Application
Priority
DE 3938460 A 19891120
Abstract (en)
[origin: JPH03175511A] PURPOSE: To prevent an actual value voltage from being superimposed by an in-phase signal by forming a reference potential and a target value voltage by returning the voltage of surface resistance of a load through a high-resistance impedance converter to a control amplifier. CONSTITUTION: A voltage 11 dropped by a surface resistor 5 of the load is supplied to the input side of a high-resistance impedance converter 6 so that a potential 9 generated on the output side of the impedance converter 6 can form the reference potential and a target value voltage 3 for control amplifiers 1 and 2. Thus, the feedback operation of the in-phase voltage generated by the surface resistance 5 of the load to the control amplifiers 1 and 2 can be minimized and the problem of occurrence caused by the unwanted in-phase signal is eliminated.
IPC 1-7
IPC 8 full level
G05F 1/00 (2006.01); G05F 1/10 (2006.01); G05F 1/46 (2006.01); G05F 1/56 (2006.01); G05F 1/565 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DE 3938460 C1 19910207; CN 1025082 C 19940615; CN 1051990 A 19910605; DE 59007348 D1 19941103; EP 0462314 A2 19911227; EP 0462314 A3 19920129; EP 0462314 B1 19940928; JP H03175511 A 19910730; JP H0612498 B2 19940216; US 5138248 A 19920811
DOCDB simple family (application)
DE 3938460 A 19891120; CN 90109078 A 19901112; DE 59007348 T 19901024; EP 90120362 A 19901024; JP 31299490 A 19901120; US 61461790 A 19901115