Tachometer kit with alternator pick up
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United States of America Patent
Stats
-
Mar 22, 1988
Grant Date -
N/A
app pub date -
Feb 29, 1984
filing date -
Feb 29, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle tachometer kit including a pick up coil that is adapted to be mounted on the outside of the vehicle's alternator to sense its rotating field without any disassembly. An induced signal in the coil from alternator field leakage provides the normal input to a user calibrated r.p.m. display driving circuit in the tachometer that can be calibrated for different alternators and drive pulley ratios without another tachometer by selectively applying a simulated input reference signal to the display driving circuit and adjusting the r.p.m. display until a scheduled ratio is achieved between the displayed r.p.m. and the reference signal.
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Cited Art Landscape
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