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Interactive Simulations for Teaching Physics
Transformers
Authors: Ms. Giselle dos Santos Castro - Federal University of Ceara - UFC
Dr. Nildo Loiola Dias - Federal University of Ceara - UFC
CONTROLS:
- Choose a coil for the transformer primary.
- Choose a coil for the transformer secondary.
- Choose a resistor for the secondary.
- Turn on the AC voltage source using the ON/OFF button and adjust the source output voltage using the slider. The source automatically shuts off if the supplied current exceeds 5,000 A.
- Choose the appropriate voltmeter scale to measure the alternating voltage across the resistor.
- Click REPLACE MULTIMETER if it burns out (indicated by a blurry image of it).
DESCRIPTION OF THE SIMULATION:
This simulation allows the study of the operation of a voltage transformer. Several combinations of coils can be used in the transformer's primary and secondary. An AC voltage source supplies the transformer primary voltage. The virtual voltage source can supply the transformer primary with a voltage from 0 to 240 V AC and supply a maximum current of 5,000 A. A multimeter allows you to measure the alternating voltage over a resistance connected to the secondary of the transformer. There are 5 resistor options that can be connected to the secondary. If a secondary resistor is used that tends to demand a current greater than 5,000 A from the source, the source automatically switches off. The simulation was programmed to provide an output power slightly less than the input power. The relationship between output power and input power varies with each startup.
For an analysis of the data, consult one of the proposed ACTIVITY GUIDE.
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