Solar panel battery charger

March 19th, 2012 by psu | No Comments | Filed in Battery Charger

solar panel battery charger 300x156 Solar panel battery chargerThe solar battery charger circuit is nothing but a dual comparator that connects the solar panel to the battery when the voltage at the latter terminal is low and disconnected if exceeding a certain threshold. Since it is only by measuring the battery voltage, it is especially intended for lead batteries, a electrolyte liquid or gelled, that adapt the best of this way.

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pinit fg en rect gray 20 Solar panel battery charger

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12 V Car battery charger based 7812

March 7th, 2012 by psu | No Comments | Filed in Battery Charger

car battery charger based 7812 300x118 12 V Car battery charger based 7812Description of the 12V battery charger electronic scheme :
Below is a very simple circuit that can be used to charge 12v car battery. In this circuit there is installations to control the charging current and voltage. The circuit is based on the circuit MC78T12ABT IC from Freescale. IC is actually a 7812 with a TO-3 package with a capacity of 3A.

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pinit fg en rect gray 20 12 V Car battery charger based 7812

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High Performance Gelled lead acid charger

February 14th, 2012 by psu | No Comments | Filed in Battery Charger

gelled lead acid battery charger 300x283 High Performance Gelled lead acid chargerThis high performance battery charger circuit allow quickly charges gelled lead-acid batteries, and automatically turns off at full charge. First, the charge current is held at 2 A, but as battery voltage rises, the current will decreases. When current falls to 150 mA, the charger automatically switches to a lower float voltage to keep from overcharging. When you hit full charge, transistor Q1 lights the LED to indicate that status.

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pinit fg en rect gray 20 High Performance Gelled lead acid charger

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Mobile NiCd Charger

January 23rd, 2012 by psu | No Comments | Filed in Battery Charger

portable NIcd charger 300x196 Mobile NiCd Charger

This mobile battery charger is designed primarily in order to give model enthusiasts the opportunity of charging their Nicad batteries from a car battery out in the open.

When the NiCd charger circuit is connected to the car battery, D2 lights only if the Nicad to be charged has been connected with correct polarity. For that purpose, the + terminal of the Nicad battery is connected to the base of T1 via R8. Because even a discharged battery provides some voltage, Ti is switched on and D2 lights.

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pinit fg en rect gray 20 Mobile NiCd Charger

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Lithium Battery Charger

October 26th, 2011 by psu | 1 Comment | Filed in Battery Charger

Lithium battery charger 300x136 Lithium Battery ChargerThis Lithium battery charger circuit is dedicated to charge lithium batteries. It uses 2 chips, voltage regulator LM317T and ICL7665 warns microprocessors (μPs) of overvoltage and undervoltage conditions.

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Nicad Battery Zapper

October 10th, 2011 by psu | No Comments | Filed in Battery Charger

nicad battery zapper 300x96 Nicad Battery Zapper

This Nicad Battery zapper circuit clears internal shorts in nickel-cadmium batteries by burning them away.

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pinit fg en rect gray 20 Nicad Battery Zapper

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Thermally Controlled Nicad Charger

October 10th, 2011 by psu | 1 Comment | Filed in Battery Charger

Thermally controlled nicad charger 300x196 Thermally Controlled Nicad Charger

One method to charge Nikel Cadmium (NiCad) batteries quickly with out abuse is generally to measure battery cell temperature and taper the charge accordingly.

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pinit fg en rect gray 20 Thermally Controlled Nicad Charger

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