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Simple Mobile Phone Battery Charger
Battery Discharger Using Discrete Components
Low Cost Universal Battery Charger Schematic
High Power Car Battary Eliminator
5v Powered Charge Pump Battery Charger
Making a Solar Energy Powered an iPhone Battery Charger
Balancing LiPo Cells
LM317 to create constant current of 2mA?
Particularly LM317 Circuit With 12v Battery Charger Circuit
Battery Equality Monitor
Make Your Iphone Battery Last Longer
Simple Solar charger circuit project using transistors
Simple Lead Acid Battery Charger #2
Battery Charger LM317
Simple Lead Acid Battery Charger 1
How Build a Solar Charger use IC LM317
Build a Smart battery charger
Simple Car Battery Voltage Monitor Circuit
Lead Acid Battery Protector
Voltage Tester for Model Batteries
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2 .Line IntercomTelephone Line Changeover
The circuit presented here can be used for connecting two telephones in parallel and also as a 2-line intercom. Usually a single telephone i...
Strip LED Lamp
Strip LEDs are available in different colours powered by direct current (DC) source. These LEDs are available as surface mount devices with...
Fan Controller Using Just Two Component
The Maxim MAX 6665 (www.maxim-ic.com) provides a complete temperature-dependent fan controller. It can switch fans operating at voltage...
LED FLASHER WITH ONE TRANSISTOR
This is a unique flasher circuit employing a single driver transistor that takes its flash-rate from a flashing LED. The flasher within the ...
Efficient Fan Speed Controller
A partial solution to quietening noisy PCs can be to reduce the speed of internal cooling fans. Low-cost fan speed controllers are avai...