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K3-04. Demountable Transformer - V Vs N - Oscilloscope
Purpose
To demonstrate the effect of changing the number of turns in the secondary of a transformer.
Equipment
Demountable transformer core with 250-turn primary coil, long wire with banana plugs, and oscilloscope on scope/TV cart.
Setup Time
5 minutes.
Images
Description
Use the variac to put 75VAC at 60 Hz onto the primary coil of the transformer. The secondary coil is created by looping a wire around the transformer core and connecting it to the AC voltmeter. The voltage produced is proportional to the number of turns in the secondary coil - 3 VAC RMS for 10 turns, which is approximately 10 volts peak-to-peak on the oscilloscope.
References
Joe L. Ferguson, Turn By Turn Transformer Demonstration, TPT 17, 59, (1979).
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See pagesk1. forces on moving charges
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See pagesk2. electromagnetic induction
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See pagesk3. transformers
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See pagesk4. motors & generators
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See pagesk5. electrical properties of matter
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See pagesk6. electric circuits & instruments
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See pagesk7. rlc circuits
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See pagesk8. electromagnetic waves
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See pagesk1. forces on moving charges
-
See pagesk2. electromagnetic induction
-
See pagesk3. transformers
-
See pagesk4. motors & generators
-
See pagesk5. electrical properties of matter
-
See pagesk6. electric circuits & instruments
-
See pagesk7. rlc circuits
-
See pagesk8. electromagnetic waves