Circuit for supplying voltage to a microprocessor in an ignition circuit for an internal combustion engine
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United States of America Patent
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Feb 28, 1995
Grant Date -
N/A
app pub date -
Aug 6, 1993
filing date -
Aug 7, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention is directed to a circuit for providing a controlled voltage supply to a microprocessor in an ignition circuit of an internal combustion engine equipped with a spark plug. The circuit includes: a generator having an induction coil and magnetic device for generating an alternating voltage in the coil; a microprocessor for controlling the spark plug; the microprocessor having first and second connecting terminals and a capacitor connected across the terminals; a thyristor having a gate electrode is connected between the induction coil and the capacitor; and, a voltage limiter is connected to the gate electrode, The controlled voltage supply for the thyristor is ensured over the entire rpm range of the engine without noticeable energy losses.
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