Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Analog armature control
Reexamination Certificate
2007-02-14
2011-11-01
Benson, Walter (Department: 2837)
Electricity: motor control systems
Open loop speed control system for dc motor with commutator
Analog armature control
C388S825000, C388S830000
Reexamination Certificate
active
08050544
ABSTRACT:
The invention relates to an electronic control device for regulating the voltage across a high-side load, especially for regulating a fan in a motor vehicle, with a control voltage (V1) which is referenced to system ground and which is mirrored to the positive high-side supply voltage, wherein the control voltage (V1) is supplied to the base of a first transistor (Q1) operated in common-emitter connection, which transistor (Q1) has, in the emitter circuit, a first resistor (R1) and, in the collector circuit, a second resistor (R2) and, in series with the latter, the base-emitter diode of a second transistor (Q2). Compensation for temperature effects of the base-emitter voltage of the first transistor is performed by the base-emitter path of a second transistor of the same conductivity type in series with the first transistor.
REFERENCES:
patent: 3731170 (1973-05-01), Emmert
patent: 3851235 (1974-11-01), Harrison, Jr.
patent: 4079308 (1978-03-01), Brown
patent: 4232261 (1980-11-01), Lingstaedt et al.
patent: 4806832 (1989-02-01), Muller
patent: 6133701 (2000-10-01), Gokturk et al.
patent: 2002/0131286 (2002-09-01), Zametzky
patent: 2009/0027032 (2009-01-01), Zametzky
patent: 2009/0121667 (2009-05-01), Zametzky
patent: 58107921 (1983-06-01), None
patent: 01302409 (1989-06-01), None
Tietze, Schenk: Halbleiterschaltungstechnik. 11. Auflage, Springer-Verlag Berlin, 1999, S. 964-968.
Benson Walter
Chan Kawing
Hackler Walter A.
SITRONIC Ges. fuer elektrotechnische Ausruestung mbH & Co.
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