Battery charger. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Automobile. Batteries, chargers
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Charging of the batteries stops when the voltage at the terminals exceeds 12,5 V.
The advantage of the device is the ability to automatically disconnect it from the network and connect to it at the expense of the energy of the batteries. With the appropriate replacement of elements, the machine can be used to recharge the backup batteries of the automatic telephone exchange and other objects. The power transformer in the machine uses a standard one, type TPP-318U, which provides a voltage of at least 16 V at the output of the secondary winding (load current of at least 10A).
Transistors VT1, VT2 can be replaced with KT603. The VD1 triac must be installed on a heat sink with an area of at least 100 sq.cm.
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