A simple battery charger. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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A simple battery charger. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Chargers, batteries, galvanic cells

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Charger circuit shown in fig. 1 is designed to charge nickel-cadmium batteries. The circuit is a simple current stabilizer. The charging current is regulated using a variable resistance ranging from 10 to 500 mA.

Simple battery charger
Fig. 1

Any diode capable of withstanding the charging current can be used in the device. The supply voltage must be at least 30% greater than the maximum voltage of the battery being charged.

The circuit I have assembled has been working flawlessly for several years to charge batteries of the NCC-0,45 type, the charging current for which is 45 mA.

Author: Nikolay Bolshakov, rf.atnn.ru

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Anatoly
I threw out all the Chinese chargers, inserted this circuit and the charging problem was solved on all three screwdrivers, the only thing is a larger cooling radiator (aluminum plate. From the electric bus, reinforced on the side of the charging case - beauty, it works .... Everything, there is nothing more to think ..

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