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Hobby Circuits designed by Dave Johnson

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

List of Dave's Circuit Designs

Text & Graphics Copyright David A. Johnson, PE  --  ALL Rights Reserved.
LINKING to Dave's circuits is permitted but DO NOT COPY CONTENT to your WEB SITE server!

Solar Cells (Panel) Circuits
Circuits Designed by David Johnson, P.E. :

Modified Cheap Solar LED Path Light

Modified Colman Lantern3


Photovoltaic Solar Panels-Ideal Blocking Diode Circuit

PV Solar Cell Test Fixture

PV Solar Panels-Ideal Blocking Diode Circuit


Reduce voltage to Photovoltaic Solar Panel with Ideal Diode

Salvaged Broken Solar Cells

Solar 1w Cob LED Light

Solar Cell Test Fixture

Solar Fireflies In Jar Light

Solar Insolution Meter

Solar Insolation Monitor

Solar Lithium Ion Battery Charger using LT1133

Solar Path Light Improvement

Solar Powered Cell Phone Charger

Solar Powered Flood Light using NiMH

Solar Powered Infrared 1W Security Camera Illuminator

Solar Powered Lighthouse

Solar Powered Lithium Ion Battery Charger

Solar Powered Mason Jar Light

Solar Powered Quartz Clock

Solar PV Cell Test Fixture


Solar-Powered Pump Motor Controller

Tool Shed LED Light

Variable Isolated AC Voltage Spans 0VAC to 280Vac

Water Pump controlled by Solar Power

Well Pump Flasher & Beeper
1W Solar Path Light with COB

24v NiMH
Battery Charger using a 12v Solar Panel 


8 Solar Cell LED Light

8-Solar Cell Lithium Ion Battery Charger Version 2

9v Solar Panels Converted to 4.5v Panels

Broken Solar Panels

Cell Phone Solar Powered Charger


Convert Solar Powered Light to Flasher

Eight-Solar Cell Lithium Ion Battery Charger Version 3



Ideal Blocking Diode Circuit for Photovoltaic Solar Panels

Ideal Diode for PV Panels

Ideal Diode Function

Improved Solar LED Spot Light

Improved Solar Path Light






Modified 4 D Cell LED Lantern


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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