Breakerless flywheel magneto ignition system

Details Breakerless flywheel magneto ignition system Breakerless flywheel magneto ignition system

1978-07-31

1980-02-19

Cox, Ronald B.

Internal-combustion engines

Igniters

Incandescent

315209T, F02P 100

Patent

active

041889304

ABSTRACT:
In a flywheel magneto ignition system, opposite terminals of the primary winding are respectively connected with the collector and emitter terminals of a transistor device. A biasing coil, inductively coupled with the magneto armature core, has its terminals respectively connected to the transistor base and emitter terminals to bias the transistor on during an interval terminating at the time of ignition. An SCR, non-conductive during said interval, is connected for short circuiting the biasing coil. A trigger coil, connected with the SCR gate through a zener diode, provides gating current for the SCR at the time of ignition. A diode in series with the biasing coil and the base-emitter junction of the transistor ensures fast transistor turn-off.

REFERENCES:
patent: 3484677 (1969-12-01), Piteo

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