The Design Corner
Updated on:  Tuesday, April 08, 2008 04:34 PM

• The Hobby Corner
    Hobby Circuits, 100+ Circuits and Schematics designed by Dave Johnson
    Electric Field Disturbance Monitor
    List of 100+ Construction Project Ideas
    Electronic Tricks & Helpful Hints

• Capacitance Proximity Switch Technology
     Introduction   
     Applications   
     Physics of Capacitance     
     Units of Capacitance
     Dielectric Constant Definition
     Human Body Capacitance    
     Low Voltage Touch Switch Circuits
        Excitation Circuits   
        Capacitance Change Sensor Circuits  
        Interface Circuits    
     AC Line Voltage Touch Switch Circuits 
    Commercial Capacitance Proximity Switch (Faraday Switches)
    Helpful Links

• The Experimenter's Journal -- Follows the steps of the basic research involved in some projects

• Science Fair Project Ideas --Over 100 science project ideas, in multiple categories, are listed as inspiration for junior and senior high school students.

The E-Zine represents 30 years of collecting material and thoughts of our publisher, David A. Johnson, P.E.     Please surf and visit often.  New material will be added regularly.  -- Jan Johnson, Editor