12-0-12 Centre Tap transformer has 240 primary windings and center tap secondary winding. It acts as a step-down transformer and reduces AC – 240V to AC-12V. it can give outputs of 24v, 12V and 0V. A transformer transfers energy on the principle of mutual induction, by inductive coupling between its windings and it’s a static device. Its core is made up of high permeability silicon steel. steel has permeability many times compared to free space and it serves to reduce magnetizing current greatly and confine the flux to a path which couples the windings.

Applications of Center Tapped Step Down transformer

• Rectifier circuits
• AC-AC step down
• Full-wave rectifiers

Transformer Terminal Description

No:	Terminal Name	Description
1	I1 and I2	These are the input wires for the transformer, it is connected to the phase and neutral of AC mains
2	T1 and T3	There are the output terminals of the Transformer, the voltage across it will be 24V AC
3	T2	This is the center tapped wire of the transformer; this wire can be combined with either T1 or T3 to get 12V AC across it. It’s very useful for rectifier circuits

12-0-12 Centre Tapped Transformer Specifications

• Input Voltage: 220V AC at 50Hz
• Output Voltage: 24V, 12V or 0V
• Output Current: 1 amp
• Vertical mount type
• Low cost and small package
• Brand: Marshal