It is a general-purpose chassis mounting mains transformer. The transformer has 240 V primary windings and center tapped secondary winding. This transformer works on 240 to 220 volts and needs a current of 2.5 amp. Center-tapped 12V 2.5 amp transformer converts AC voltage into DC voltage.

Specification of Center Tapped Transformer 12v 2.5A:

• Step-down Centre tapped Transformer
• Input Voltage: 220V AC at 50Hz
• Output Voltage: 12V, 12V or 0V
• Output Current: 2.5A
• Vertical mount type
• Low cost and small package

How to use:

The operation and theory behind a Center tapped transformer are very similar to a normal secondary transformer. A primary voltage will be induced in the primary coil (I1 and I3) and due to magnetic induction, the voltage will be transferred to the secondary coil. Here in the secondary coil of a center-tapped transformer, there will be an additional wire (T2) which will be placed exactly at the center of the secondary coil, hence the voltage here will always be zero.

If we combine this zero potential wire (T2) with either T1 or T2, we will get a voltage of 12V AC. If this wire is ignored and voltage across T1 and T2 is considered then we will get a voltage of 24V AC. This feature is very useful for the function of a full wave rectifier.