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Hobby Circuits designed by Dave Johnson

Last Updated on: Tuesday, October 24, 2017 03:04 PM

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Capacitance Touch Switch Circuits
Circuits Designed by David Johnson, P.E. :

Capacitance Touch Switch

Detector for Human Footsteps

Door Knob Alarm

Door Knock Beeper

Exciter Circuit-12v Touch Switch

Finger Touch Activated Switch

High Power Touch Switch Exciter Circuit

Infrared Reflected Light Switch

Knocking rings Doorbell

Momentary Operation Touch Switch

Momentary Touch Activated Switch

Pushbutton Switch works through Glass

Reflected Infrared Light Switch

Single Output 120VAC 200 Watt Touch Switch

Solid State Touch Activated Switch

Through Glass Push Button Switch

Touch Activated Switch

Touch Alarm for Door Knob

Touch Switch 240VAC

Touch Switch controls a 120 VAC load

Touch Switch Exciter

1.5V Touch Activated Switch

120 VAC Touch Switch

12v Touch Switch Exciter Circuit

240VAC Touch Switch

24v NiMH
Battery Charger using a 12v Solar Panel 

3v Capacitance Proximity Switch

5 Volt Momentary Operation Touch Switch

5v Capacitance Touch Activated Momentary Switch

5v Touch Switch

AC to DC (240v to 5v)Power Supply

Basement Remote Doorbell

Capacitance-Based Touch Switch

Capacitance Proximity Switch-3 volts

Capacitance Touch Activated Momentary Switch-5v


Hobby Circuits by Category

  David A. Johnson, P.E. about these circuits



Imagineering Ezine    Discover Solar Energy Dave Johnson & Associates Faraday Touch Switches

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