Page 219 - Electrician - TT (Volume 2)

ELECTRICIAN - CITS

Battery charger and inverter

Objectives: At the end of this lesson you shall be able to
• explain the working of battery charger with the help of block diagram
• state the principle of inverter with the help of block diagram.

A Simple battery charger : The charger can charge 6V,12Vand 24V battery at Suitable current rate. This circuit has
many protection built in it to protect the battery from overcharge and reverse polarity etc.

The charger consist of an auto transformer X2,(Fig 1) for supplying constant current and voltage.
A charger transformer ‘X1’ is connected to the auto transformer and the secondary of the X1 (fig 1) is rectified through
full wave bridge rectifier and supplied to the battery under charger through. Ammeter voltmeter and a potentiometer
(Fig 1)

Fig 1

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CITS : Power - Electrician & Wireman - Lesson 93-100