Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Patent
1980-11-14
1982-07-13
Eisenzopf, Reinhard J.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
123490, 361194, H01H 4732
Patent
active
043397816
ABSTRACT:
An apparatus is proposed for controlling the electric current through inductive consumers, in particular through a fuel metering valve in internal combustion engines, this apparatus representing a two-point closed-loop controller and functioning with a single threshold switch for an upper and a lower threshold. The apparatus includes one current-measuring resistor each in the freerunning circuit and in the main current circuit, both measuring resistors being members of a voltage divider between the two supply voltage lines and whose middle junction is carried to the threshold switch. By means of a resistor-diode network in combination with the threshold switch, a correction can be made in the individual switching thresholds in accordance with supply voltage.
REFERENCES:
patent: 4180026 (1979-11-01), Schulzke et al.
patent: 4266261 (1981-05-01), Streit et al.
Harsch Klaus
Schulzke Peter
Eisenzopf Reinhard J.
Greigg Edwin E.
Robert & Bosch GmbH
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