7. Electronics – 7.4 Dark detectors (teacher instructions)
Text
Experimentation instructions:
Background information on the content and practical information on conducting the “Dark detectors" experiment.
Available in:
English
Type of media:
Text
Last update:
2022-10-24
License:

This medium is made available under a CC BY-SA 4.0 international license.
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This medium is made available under a CC BY-SA 4.0 international license.
What does this mean?
How to reference this medium
Media package:
Description:
This experiment builds upon the learning of experiment 7.3, properties and function
of a transistor. A dark detector is a good first example of an electronic circuit, where
the input signal of the LDR operates an output (LED).
One item deals with „Technical application and vocational orientation“.
Information and ideas:
Depending on the LDR, the circuit functions slightly differently, i.e. you need to cover more or less of the LDR to switch on the transistor (LED). Also note that changing the 10 kΩ resistor to a different value will change the function of the circuit.
of a transistor. A dark detector is a good first example of an electronic circuit, where
the input signal of the LDR operates an output (LED).
One item deals with „Technical application and vocational orientation“.
Information and ideas:
Depending on the LDR, the circuit functions slightly differently, i.e. you need to cover more or less of the LDR to switch on the transistor (LED). Also note that changing the 10 kΩ resistor to a different value will change the function of the circuit.
Related media:
There are no other media directly related to this file.
Learning resource type:
Experiment
Subjects:
Physics; Technology
Grade levels:
Grade 7 to 9; Grade 10 to 13
School types:
Middle/high school; Vocational training
Keywords:
Electrical circuit; Electricity; Electronics; Energy; Resistance (physics); Semiconductor
Bibliography:
Siemens Stiftung Media Portal
Author:
Dr. Ramon Leyendecker
Rights holder:
© Siemens Stiftung 2022