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Circuits designed by David Johnson, P.E.
Last Updated on: Saturday, December 30, 2017 06:13 AM

List of Dave's Circuit Designs

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Pressure Sensor / Detector / Monitor Circuits
 
Circuits Designed by Dave Johnson, P.E. :

Alarm-Piezo Device Detects Motion

Machine Vibration Triggers Hour Meter

Motion Alarm using piezo Device

Optical Fiber Pressure & Motion Test

Piezoelectric Vibration Sensor Activates Switch


 

Dave's Circuits

Hobby Circuits

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