An output transformer is an electrical device that is used to change voltage in electrical circuits. The main reason we use AC instead of DC is that a transformer can readily convert AC electricity from one voltage to another with little loss of power. Transformers only work with AC and this is the main reason why our power plants use AC.
An
output transformer uses several
major characteristics of electricity and magnetism to change AC
voltage. To understand this better you need to know the
principles of creating an electromagnet and creating
electricity.
AC Output Transformers - Creating an electromagnet
A wire with AC electric current flowing through it has a magnetic field around it. A transformer is designed by wrapping a wire around a piece of iron with AC current going through it. This causes a magnetic field and increases the realignment of the iron atoms, which acts as a tiny magnet. The wire wrapping and iron core is called an electromagnet.
AC Output Transformers - Relation to turns of wire and voltage
The more wire and number of turns around the iron core the greater the intensity of the electromagnet field. If you double the number of turns in a transformer you double the strength of the electromagnet field. The more current through the wire the electromagnetic field strength is increased. According to Ohm's Law voltage and current are proportional for a given resistance. The strength of the electromagnetic field is proportional to the voltage used. Triple the voltage and you triple the strength of the electromagnet. The strength of the magnetic field is proportion to the input voltage and output voltage and the number of turns around the core.
AC Output Transformer - Direction of magnetism
The direction of the magnetic field is determined by the direction of the turns around the iron core and the direction of the current. If you change the direction of the current, the north and south poles of the electromagnet will switch. In the United States one end of the AC electromagnet is switching from north to south and back again 60 (60Hz) times per second.
We hope this short lesson on how AC works in an output
transformer will give you a better understanding how a
transformer works. If you are looking for an
output transformer call TEMCo
at the number below. TEMCo has been in the transformer business
for over 40 years and is located in California. They only sell
quality output transformers and offer competitive pricing.
Call TEMCo for your Output Transformer at 1-800-613-2290
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AC
Output Transformers


