Ignition coil current control circuit

Details Ignition coil current control circuit Ignition coil current control circuit

1976-06-18

1979-04-03

Engle, Samuel W.

Internal-combustion engines

Igniters

Incandescent

315209T, F02B 102, H05B 3702

Patent

active

041471458

ABSTRACT:
A circuit for controlling the current supplied to an ignition coil is usable in conjunction with an electronic ignition. In one embodiment a transistor is connected in shunt with the input of a current amplifier and has a control electrode connected to a voltage divider a portion of which is in series with the coil, so that the transistor is responsive to both battery voltage and coil current. Excessive voltage or coil current causes the transistor to conduct thereby lowering the input signal to the current amplifier and reducing the coil current.

REFERENCES:
patent: 3871347 (1975-03-01), Weber
patent: 3884208 (1975-05-01), Beuter
patent: 3900017 (1975-08-01), Collins
patent: 3901205 (1975-08-01), Brungsberg
patent: 3924595 (1975-12-01), Brungsberg

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