Electronic control system
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United States of America Patent
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Sep 27, 2011
Grant Date -
May 14, 2009
app pub date -
Nov 12, 2008
filing date -
Nov 14, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to an electronic control system for controlling a voltage across a load, in particular across a fan motor of a motor vehicle, as a function of a control signal, comprising: a setting transistor, a transistor, which activates the control channel of the setting transistor, as well as two resistors, which form a voltage divider via which the voltage across the load is fed to the emitter of the transistor, wherein the control system is designed, in the absence of the control signal, to block the control channels of all the transistors of the control system for limiting the current through all the resistors of the control system, such that, in the absence of the control signal, the control system has a quiescent current consumption in the off-state current range of the transistors.
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