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Power supply circuit diagrams
August 4, 2010
This circuit was developed to charge the Lithium-Polymer cells used in a model aircraft. Lithium-Polymer cells are incredibly lightweight compared to Ni-cad battery packs of the same voltage and amp-hour rating. Their only drawback is... [more]
August 4, 2010
This circuit is Ideal for car use. It has ability to transform a mains adapter in to a charger . This one can be used to charge cellular phone, toys, portables, video batteries, MP3 players,... [more]
circuit from:http://www.extremecircuits.net/2009/10/low-cost-universal-battery-charger.html
August 4, 2010
Charging of the mobile phone, cellphone battery is a big problem while traveling as power supply source is not generally accessible. If you keep your cellphone switched on continuously, its battery will go flat within... [more]
circuit from:http://www.extremecircuits.net/2009/08/mobile-cellphone-battery-charger.html
August 4, 2010
Mobile phone chargers available in the market are quite expensive. The circuit presented here comes as a low-cost alternative to charge mobile telephones/battery packs with a rating of 7.2 volts. [more]
circuit from:http://www.extremecircuits.net/2009/07/mobile-phone-battery-charger-circuit.html
August 4, 2010
Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can replenish cell phone battery three or four times in places where AC power is not available.... [more]
circuit from:http://www.extremecircuits.net/2010/02/mobile-phone-travel-charger-circuit.html
August 4, 2010
Using the USB port on your computer to charge your player’s batteries is not always practical. What if you do not have a computer available at the time or if you do not want to... [more]
circuit from:http://www.extremecircuits.net/2009/08/mobile-phone-and-ipod-battery-charger.html
August 4, 2010
This NiCd battery Charger can charge up to 7 NiCd batteries connected in series. This number can be increased if the power supply is increased with 1.65V for each supplementary battery. If Q2 is mounted... [more]
circuit from:http://www.extremecircuits.net/2010/02/nicd-battery-charger-with-reverse.html
August 4, 2010
This automatic NiCd charger for 9V NiCd batteries is using 555 timer properties and is very easy to build. Why is an automatic 9 volts NiCd battery charger? Because you can leave the battery for... [more]
circuit from:http://www.extremecircuits.net/2010/02/nimh-and-nicd-battery-charger-circuit.html
August 4, 2010
This simple circuit can give regulated 4.7 volts for charging a mobile phone. USB outlet can give 5 volts DC at 100mA current which is sufficient for the slow charging of mobile phones. Most of... [more]
circuit from:http://www.extremecircuits.net/2010/02/usb-powered-mobile-phone-battery.html
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