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K5-42. Transistor
Purpose
Demonstrate a transistor circuit
Equipment
Mounted transistor circuit, including car headlamp, with heavy-duty dry cells.
Suggestions
A transparency of the circuit is part of the demonstration.
Images
Description
A high-current transistor controlled by a flashlight battery operates an automobile headlamp by switching a 7.5volt heavy duty dry cell onto the light. The circuit for the system is shown below, and is included with the demonstration. By removing and replacing wires it can be shown that the flashlight battery alone cannot operate the lights and that the heavy duty dry cell connected directly to the light turn the light on.
References
Novel Experiments in Physics: Amplification, University of California, Berkeley, 1963. ◙A. Sconza, G. Torzo, and G. Viola, Experiment on the physics of the PN junction, AJP 62, 66-70 (1994).
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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