EN Physics: Laboratory Experiments

Page 237

9 Molecule and Solid State Physics 9.15 Related Experiments

Characteristic curves of semiconductors with the FG module

P2410915

Principle Determine the current strength flowing through a semi-conducting diode. Determine the collector current with the collector voltage for various values of the base current intensity. Tasks 1. To investigate the dependence of the current strength flowing through a semi-conducting diode. 2. To determine the variations of the collector current with the collector voltage for varios values of the base current intensity.

For more details refer to page 125.

Dielectric constant of different materials

P2420600 Principle The electric constant is determined by measuring the charge of a plate capacitor to which a voltage is applied. The dielectric constant is determined in the same way, with plastic or glass filling the space between the plates.

For more details refer to page 120.

Ferromagnetic hysteresis with Cobra3

P2430711 Principle A magnetic field is generated in a ring-shaped iron core by a continuous adjustable direct current applied to two coils. The field strength Η and the flux density B are measured and the hysteresis recorded. The remanence and the coercive field strength of two different iron cores can be compared.

For more details refer to page 155.

PHYWE Systeme GmbH & Co. KG · www.phywe.com 235


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