Device for controlling the current through an inductive consumer

Details Device for controlling the current through an inductive consumer Device for controlling the current through an inductive consumer

1980-06-26

1982-08-17

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

123490, H01H 4732

Patent

active

043452965

ABSTRACT:
A device is proposed for controlling the current through switching devices which function inductively, in particular magnetic valves in the fuel metering system of an internal combustion engine, with which it is possible to control the current during an attracting and maintenance phase. A primary characteristic is a bracketed and controllable constant-voltage source parallel to the base-emitter path of a switching transistor and of a measuring resistor. Furthermore, a threshold switch connected with its positive input to the measuring resistor is coupled with positive feedback, and the negative input of this threshold switch is connected to a voltage divider controllable in accordance with the input signal.

REFERENCES:
patent: 3786314 (1974-01-01), Misch

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