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Honors Transformers. Transformers. Used to increase or decrease the voltage of alternating currents. Transformers. Consist of 2 coils of wire. Primary Coil Alternating current enters Secondary Coil Alternating current leaves
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Transformers • Used to increase or decrease the voltage of alternating currents.
Transformers • Consist of 2 coils of wire. • Primary Coil • Alternating current enters • Secondary Coil • Alternating current leaves • It’s the difference in the number of turns of wire on each coil that causes the voltage the change.
2 Types of Transformers • Step-up Transformer • Increase voltage • Secondary more turns than primary • Step-down Transformer • Decrease voltage • Primary more turns than secondary
A step-up transformer has 400 turns on its primary coil and 600 turns on its secondary coil. If the primary coil is supplied with 120 V of alternating current, what will be the secondary (output) voltage? ns= 600 turns np= 400 turns Vs= ? Vp= 120