Physics

Capacitor in the AC circuit

Principle

A capacitor is connected in a circuit with a variable-frequency voltage source. The impedance and phase displacement are determined as a function of frequency and of capacitance. Parallel and series impedances are measured.

Tasks

Capacitor in the AC circuit with Cobra3 and the FG module

Principle

A capacitor is connected in a circuit with a variable-frequency voltage source. The impedance and phase displacement are determined as a function of frequency and of capacitance. Parallel and series impedances are measured.

Tasks

RLC circuit

Principle

The current and voltage of parallel and series-tuned circuits are investigated as a function of frequency. Q-factor and band-width are determined.

Tasks

Determination of the frequency performance of a

• Series-tuned circuit for

RLC circuit with Cobra3 and the FG module

Principle

The current and voltage of parallel and series-tuned circuits are investigated as a function of frequency. Q-factor and band-width are determined.

Tasks

Determination of the frequency performance of a

• Series-tuned circuit for

Rectifier circuits

Principle

The ripple of the output voltage of various rectifier circuits is measured as a function of the load current strength and the charging capacitance. The characteristics of a voltage stabilizer and of a multiplier are investigated.

Tasks

• ...

RC filters

Principle

Resistor-Capacitor (RC) circuits serve as filters for frequencies. The frequency response of the most commonly used RC filters is recorded by point-by-point measurements as well as the frequency sweep method, and displayed on the oscilloscope. The re ...

High-pass and low-pass filterswith digital function generator

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.

High-pass and low-pass filters with the FG module

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.

Tasks

RLC measuring bridge

Resistance, phase shift and power in AC circuits with digital function generator

Principle

Series circuits containing self-induc-
tances or capacitances and ohmic resi-
stances are investigated as a function
of frequency. Measuring the electrical
magnitudes with a work or power measure-
ment instrument, real ...

Induction impulse

Principle

A permanent magnet falls with different velocities through a coil. The change in the magnetic flux Φ generates an induced voltage impulse. The induced voltage impulse USS is recorded with a computer interface system. Depending on the polarity of the permane ...

Coupled resonant circuits

Principle

The Q factor of oscillating circuits is determined from the band width and by the Pauli method. In inductively coupled circuits (band-pass filters) the coupling factor is determined as a function of the coil spacing.

Tasks

Forced oscillations of a nonlinear electrical series resonant circuit - chaotic oscillation

Principle

A sinusoidal voltage is applied to a non-linear circuit with a silicon diode functioning as voltage-independent capacity. The oscillating circuit, i.e. the occurrence of chaotic oscillatory behavior with increasing amplitude is studied.

Elementary charge and Millikan experiment

Principle

Charged oil droplets subjected to an electric field and to gravity between the plates of a capacitor are accelerated by application of a voltage. The elementary charge is determined from the velocities in the direction of gravity and in the opposite direction.

Specific charge of the electron e/m

Principle

Electrons are accelerated in an electric field and enter a magnetic field at right angles to the direction of motion. The specific charge of the electron is determined from the accelerating voltage, the magnetic field strength and the radius of the electron orbit.