Electronic Circuits and electronic circuits, electronic schematics plus an extensive resource for hobbyists, inventors and engineers

DiscoverCircuits.com, has 45,000+ electronic circuits, cross-referenced into 500+ categories.
We have searched the web to help you find quick solutions & design ideas.

Got Designs?
Please eMail
if you want me to link to and/or post your original design
NOTE:  We make every effort to link to original material posted by the designer. 
Please contact us if our link is not to your site!  Thanks.


Hour Meter Circuits
 

Last Updated: June 02, 2021 01:45 PM


Links to electronic circuits, electronic schematics and designs for engineers, hobbyists, students & inventors:

Circuits Designed by Dave Johnson, P.E. :

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

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

Please make suggests for additional circuits


Hour-Meter Circuits


HOME Schematics Index Hobby Corner Dave's Circuits Contact Info
Imagineering Ezine Dave Johnson, P.E. Faraday Touch Switches


 About Us   |  Advertise on DiscoverCircuits.com   |   Report Broken Links  |   Link to DiscoverCircuits.com  |  Privacy Policy

Copyright  January, 1998 - June, 2021     David A. Johnson  All Rights reserved. 

 COPYING any content or graphics to your web site is EXPRESSLY PROHIBITED!