Oscillations et Ondes électromagnétiques

Le condensateur dans le circuit à courant alternatif

Principle

A capacitor fitted in a direct current circuit has an infinitely large ohmic resistance so no current is measurable.
In an alternating current circuit, however, a capacitor behaves completely differently. The resistance of it is finite and a cu ...

Bobine dans le circuit de courant alternatif

Principle

A coil in a direct current circuit has an ohmic resistance because of the wire. In an alternating current circuit, however, it has an additional resistance alongside the ohmic resistance, the so-called inductive reactance. This experiment deals with w ...

Rc high-pass filtre

Principle

How does an equalizer function? Equalizers are used in sound engineering to improve tone in stereo systems and in audio computer software, for example. Their basic effect is to weaken certain frequencies of a signal and so to optimize the acoustic con ...

Rc low-pass filtre

Principle

How does an equalizer function? Equalizers are used in sound engineering to improve tone in stereo systems and in audio computer software, for example. Their basic effect is to weaken certain frequencies of a signal and so to optimize the acoustic con ...

Circuit oscillant

Principle

An oscillating circuit consists mainly of a coil and a capacitor. In this experiment, a close examination of the behaviour of the voltage and the current in an oscillating circuit is to be undertaken and the intrinsic angular frequency is to be deter ...

Circuit oscillant en parallèle

Principle

An alternating current circuit that consists of a coil and a capacitor switched in parallel to each other is called a parallel-resonant circuit. As is known from previous experiments, there is a phase shift between the current and the voltage at a co ...

Circuit oscillant en ligne

Principle

An alternating current circuit that consists of a coil and a capacitor switched in series to each other is called a series resonant circuit. As is known from previous experiments, there is a phase shift between the current and the voltage at a coil or ...

Induction magnétique avec Cobra3

Bobine dans un circuit AC avec le module FG (Cobra3)

Condensateur dans un circuit AC avec oscilloscope

Condensateur dans un circuit AC avec le module FG (Cobra3)

Circuit RLC avec le module FG (Cobra3)

Circuits redresseurs

Filtres RC (pont de Wien-Robinson)- avec générateur de fonc-tions

Filtres passe-haut et passe-bas avec oscilloscope

Principle

A coil, a capacitor, an ohmic resistance and combinations of these components are
investigated for their filter characteristics as a function of frequency. The phase displacement of the filters is determined also as a function of frequency.