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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.
LINKING to Dave's circuits is permitted but COPYING CONTENT to your WEB SITE server IS NOT!



Battery Charger Circuits
 
Circuits Designed by David Johnson, P.E. :
Eight-Solar Cell Lithium Ion Battery Charger Version 3

Fireflies_In_Jar_Solar_Light

Improved Solar Path Light

Indicates Battery Charge Current

LED_Light_8_Solar_Cell

LED_Light_for_Tool_Shed

Light_Pathway_1w_Solar_Cob_LED

Lighthouse_Solar_Powered

Lithium Battery Tester

Lithium Ion Solar Battery Charger-#2

Mason_Jar_Solar_Light

Modified 4 D Cell LED Lantern

Modified Colman Lantern3

NMH/NiCd 6v Battery Tester

Path_Light_Using_COB_LED_1w_Solar

Quartz_Clock_Solar_Powered

Solar 1w Cob LED Light

Solar Fireflies In Jar Light

Solar Lithium Ion Battery Charger using LT1129

Solar Path Light Improvement

Solar Powered Cell Phone Charger

Solar Powered Lighthouse

Solar Powered Lithium Ion Battery Charger

Solar Powered Mason Jar Light

Solar Powered Quartz Clock

Tool Shed LED Light

+5v Powered Charge Pump Battery Charger

12v_To_24v_Solar_Battery_Charger

1W Solar Path Light with COB

2-12v Battery Isolator Circuit with a LTC4412

4_D-Cell_LED_Lantern_Modified

6v NMH/NiCd Battery Tester

8 Solar Cell LED Light

8-Solar Cell Lithium Ion Battery Charger Version 2

Battery Amp-hour Capacity Tester

Battery Charge Current Indicator

Candle Power

Cell Phone Charger

Cell Phone Solar Powered Charger

Charge Pump Battery Charger-+5 Volts

Charging a 24v Battery Charger from a 12v Source

Circuit Indicates Battery Charge Current

Colman_Lantern3_Modified

Current Indicator for Battery Chargers

DIY Cell Phone Charger

Do It Yourself Portable Cell Phone Charger


 

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