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Hobby Circuits designed by Dave Johnson

Last Updated on: Thursday, November 23, 2017 04:57 AM


Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
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Bistable / Multivibrator Circuits
Circuits Designed by David Johnson, P.E. :
Flashing LED Advertising Badge #1

Generate Short Delayed Pulse

Honeybee Counter

Indicates when it is Time to Dust

Indicates when it is Time to Dust

It's Time to Dust Indicator

LED Flashing Badge #1

LED Flashing Badge #2

Miniature Pushbutton On/Off Switch

Momentary Touch Activated Switch

On/Off Flip/Flop Circuit with Automatic Timeout

One Shot (D-Flip/Flop) Circuit

Oneshot & Latch Pushbutton

Pushbutton Oneshot & Latch

Slotted Opto-Sensor used in Honeybee Counter

Timer for Darkroom Camera Shutter

Touch Activated Switch

Turn D-Flip/Flop into a One Shot Circuit

1 Second One Shot Circuit

1.5V Touch Activated Switch

12v Touch Switch Exciter Circuit

Accurate One Shot Pulse Generator

Advertising Badge #1 with Flashing LED

Advertising Badge #2 with Flashing LED

Automatic Timeout included with this On/Off Flip/flop

Battery-Powered LED Flashing Advertising #2

Circuit Indicates Time to Dust

Delayed Pulse Generator

D-Flip/Flop One Shot Circuit


 

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


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Copyright  January, 1998 - November, 2017     David A. Johnson & Associates.  All Rights reserved. 
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