- #1
Cardinalmont
Gold Member
- 22
- 4
Thank you for reading my post.
I was watching the video this video on transformers and saw an amazing demo:
From 4:00-5:20 the guy does an experiment where he has a simple transformer circuit set up:
On the primary side of the transformer he has an AC power supply, and a lightbulb.
On the secondary side of the transformer there is only a lightbulb.
When he removes the lightbulb from the secondary side of the transformer, the lightbulb on the primary side goes out.
This is really hard for me to understand. I would think that since a transformer is essentially just wires, making the non-attached secondary into an open circuit would have only a brief effect on the primary as a result of the momentary change in flux when the secondary coil is no longer creating a magnetic field. It seems to me that after the brief effects of the change in flux, the transformer would just act as wires for the first circuit to flow through, thus continuing to light the bulb.
Why does the bulb on the primary side go out? The guy in the video mentioned self impedance but didn't go into it.
I was watching the video this video on transformers and saw an amazing demo:
From 4:00-5:20 the guy does an experiment where he has a simple transformer circuit set up:
On the primary side of the transformer he has an AC power supply, and a lightbulb.
On the secondary side of the transformer there is only a lightbulb.
When he removes the lightbulb from the secondary side of the transformer, the lightbulb on the primary side goes out.
This is really hard for me to understand. I would think that since a transformer is essentially just wires, making the non-attached secondary into an open circuit would have only a brief effect on the primary as a result of the momentary change in flux when the secondary coil is no longer creating a magnetic field. It seems to me that after the brief effects of the change in flux, the transformer would just act as wires for the first circuit to flow through, thus continuing to light the bulb.
Why does the bulb on the primary side go out? The guy in the video mentioned self impedance but didn't go into it.
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