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Hour Meter Circuits
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Last Updated:
June 02, 2021 01:45 PM |
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Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:
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| Circuits Designed by Dave Johnson, P.E. : |
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AC Current Controls Hour MeterMany systems require routine maintenance based on machine operation time. The circuit below is a simple way to turn on a hour meter whenever AC power is supplied to the machine. An inexpensive snap-on current transformer from Magnetics Inc, is used to. . . Circuit by David A. Johnson P.E.-February, 2010 CT Hour MeterMany systems require routine maintenance based on machine operation time. The circuit below is a simple way to turn on a hour meter whenever AC power is supplied to the machine. An inexpensive snap-on current transformer from Magnetics Inc, is used to . . . Hobby Circuit designed by David Johnson P.E.-February, 2010 |
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Hour Meter triggered by Machine VibrationThis hobby circuit allows an off-the-shelf battery powered digital hour meter to be turned on and off, according to a machine's operation, without requiring a direct electrical connection to the machine . . . Hobby Circuit designed by David Johnson P.E.-January, 1998 Machine Vibration Triggers Hour MeterThis circuit allows an off-the-shelf battery powered digital hour meter to be turned on and off, according to a machine's operation, without requiring a direct electrical connection to the machine. Machine vibrations are detected by an off-the-shelf piezo. . . Circuit by David A. Johnson P.E.-January, 1998 |
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Please make suggests for additional circuits |
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Hour-Meter Circuits |
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