Système d'Expérimentation Élèves TESS

 
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Eb 2.8

Principle

The students should first recognize from the model that a given voltage can be divided with a potentiometer (voltage divider), and that the dividing function is based on the law for the series connection of ...

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Détails

Numéro d´article: P1373100

Eb 2.9

Principle

A commercially available dry battery or single cell is extremely suitable for this experiment on the internal resistance of a source of voltage. It has an internal resistance which is high enough to be measured well, and it can be easily replaced if inattentiveness ...

 
Détails

Numéro d´article: P1373200

Eb 3.1

Principle

The power of an electrical appliance can be qualitatively estimated from its brightness, the heat radiated, loudness etc.

In this experiment, the light emitted from the filament lamps is used as a measure of electric power. The students can easily understand that the power of ...

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Détails

Numéro d´article: P1373300

Eb 4.1

Principle

The students generally have some knowledge on what a capacitor is, and from this, and in association with the symbol, probably think of them as a pair of plates. Even though the capacitors used in this experiment do not correspond to this picture they have, they will still not expect ...

 
Détails

Numéro d´article: P1373400

Eb 4.2

Principle

The students know that the electrical component "capacitor" can store electrical energy.
The first experiment concentrates on the change in the capacitor voltage over time during charging and discharging. Qualitative statements are first derived, then the change in the voltage ...

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Détails

Numéro d´article: P1373500

Eb 4.3

Principle

The students should recognize that a capacitor represents a finitely large resistance in an alternating current circuit. The two experiments suggested are intended to result in qualitative and semi-quantitative statements on capacitive resistance.

Benefits

  • No ...
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Détails

Numéro d´article: P1373600

Eb 5.1

Principle

The students should recognise that a diode acts as an electrical valve. The teacher has to decide, according to the situation, whether an explanation is to be given for this action with the help of a model of the electrical processes within the components, or if this action ...

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Détails

Numéro d´article: P1373700

Eb 5.2

Principle

It can be assumed that the students know about the valve action of a diode and also have a knowledge of the basic properties of alternating currents (constant change in magnitude and periodical change in the direction of the current). They can therefore predict the ...

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Détails

Numéro d´article: P1373800

Eb 5.3

Principle

Characteristic curves provide professionals with information on the behaviour of electrical components. Each type of component has its own typical characteristic curve. The students are to learn this in connection with this experiment, in which they themselves record and ...

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Détails

Numéro d´article: P1373900

Eb 5.4

Principle

Solar cells play a substantial role in the development of alternative, non-fossil sources of energy. They convert light energy directly into electrical energy. 

In this experiment, the influence of the illumination on the short-circuit current and the ...

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Détails

Numéro d´article: P1374000

Eb 5.5

Principle

The maximum utilisable power of a solar cell is dependent on the intensity of the incident light. Characteristic current-voltage curves are prepared under various illuminations.

Benefits

  • No additional cable connections between the building blocks needed - clear ...
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Détails

Numéro d´article: P1374100

Eb 6.1

Principle

This experiment should impart the knowledge, that a collector current only flows through a transistor when the correct polarity of the collector voltage is chosen and a base voltage of correct polarity is applied. For an npn transistor, both the collector and base must be ...

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Détails

Numéro d´article: P1374200

Eb 6.2

Principle

In a transistor, a small change in the base current causes a large change in the collector current. In this experiment, the relationship between the collector current and the base current is examined, and the control characteristic graph plotted. 

The current ...

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Détails

Numéro d´article: P1374300

Courbes courant-tension caractéristiques d'un transistor

Principle

The knowledge of the characteristics of a transistor is a prerequisite for a deeper understanding of the processes related to a transistor amplifying or switching stage. Of the four characteristics (the output, control, input and reverse voltage transfer ratio ...

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Détails

Numéro d´article: P1374400

Le transistor en tant que commutateur

Principle

The development of computer engineering and the increasing digitalisation in the transmitting and processing of information are accompanied by an increasing use of transistors for switching functions.

This experiment is designed to demonstrate the basic principles of how a ...

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Détails

Numéro d´article: P1374500

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