Electricity: motive power systems – Battery-fed motor systems
Patent
1991-02-07
1993-05-04
Ip, Paul
Electricity: motive power systems
Battery-fed motor systems
318434, 123335, 123352, 36442604, B63H 2308
Patent
active
052085198
ABSTRACT:
An electronic governor is disclosed for power producing and power absorbing devices having a minimum number of component parts. Power for all of the electronic governor components is supplied by a small coil, thereby avoiding the need for an additional coil frame or other power source. In a preferred embodiment, power supply circuitry converts the alternating signal from the coil to a direct current signal to power the governor. A signal conditioner also provides a low state signal to a 555 timer to start the timing cycle. The length of the timing cycle, and thus the high state control signal output of the timer, is a function of the desired device speed. When the timer output is at a high state while at the same time the alternating signal from the coil is at its first polarity, one or more switches conduct to adjust an electromagnetic actuator. In one embodiment, the switches control a motor connected to an engine throttle and operated in a stepper mode. In another embodiment, the switch shunts a portion of the alternating signal from a capacitor connected across an electromagnetic throttle positioner, thereby partially closing the engine throttle.
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Dykstra Richard A.
Janisch Douglas G.
Briggs & Stratton Corporation
Ip Paul
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