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Hobby Circuits designed by Dave Johnson

Last Updated on: Saturday, December 30, 2017 05:10 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. :

Charge Pump Battery Charger-+5 Volts

Circuit Indicates Battery Charge Current

Colman_Lantern3_Modified

DIY Cell Phone Charger

Improved Solar Path Light

Indicates Battery Charge Current

LED_Light_8_Solar_Cell

Light_Pathway_1w_Solar_Cob_LED

Lighthouse_Solar_Powered

Lithium Battery Tester

Lithium Ion Solar Battery Charger-#2

Mason_Jar_Solar_Light

NMH/NiCd 6v Battery Tester

Quartz_Clock_Solar_Powered

Solar Powered Lithium Ion Battery Charger

12v_To_24v_Solar_Battery_Charger

2-12v Battery Isolator Circuit with a LTC4412

4_D-Cell_LED_Lantern_Modified

Battery_Charging_Generator_Starter

Candle Power

Cell Phone Charger

Cell Phone Solar Powered Charger


 

Hobby Circuits by Category

Dave's Circuits

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

 



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


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