A transformer is a passive electrical device that transfers electrical energy from one electrical circuit to another or multiple circuits. This is a 0-12 12V 3A transformer. It gives the output of 0V or ground and 12V. This transformer act as a step-down transformer reducing 230V AC to 12V AC. This transformer has a power rating of 3A. This type of transformer is often used in the output stage of an audio power amplifier in a push-pull circuit. The core of the transformer is winded with high-quality aluminium wire. The outer body is manufactured with high-quality steel. It offers long service life with excellent performance. High-quality COPPER wire winding It gives the output of 0V or ground and 12V Act as a step-down transformer reducing 230V AC to 12V AC