Circuit for decreasing oscillatoins in the primary winding of an

Details Circuit for decreasing oscillatoins in the primary winding of an Circuit for decreasing oscillatoins in the primary winding of an

1981-01-28

1983-05-10

Argenbright, Tony M.

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

123651, 315209T, F02P 304

Patent

active

043824315

ABSTRACT:
Oscillations which would normally occur when the current in the primary winding of an ignition coil is limited to a predetermined value prior to ignition are suppressed by use of a feedback resistor. Specifically, the basic circuit consists of the primary winding of the ignition coil connected in series with a Darlington transistor configuration which, in turn, is connected in series with a measuring resistor, at a common point. The input of the current control system is connected to the common point through an additional resistor, while the output of the control circuit is connected to the input base of the Darlington configuration. Oscillations which might otherwise occur are suppressed by the use of a feedback resistor connected between the input and output lines of the control circuit.

REFERENCES:
patent: 3605713 (1971-09-01), Le Masters et al.
patent: 3838672 (1974-10-01), Richards et al.
patent: 4245610 (1981-01-01), Sugiura

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