Characteristic curves of semiconductors with Cobra4
The current-voltage characteristic of a semiconducting diode is measured.
The collector current in dependency on the emitter-collector voltage is measured for different values of base current strength through a NPN transistor.
- Fast and easy experimenting
- Get to know the behaviour of several types of semiconductors
- Simplified implementation: all pre-settings already prepared
- Data logging reveals instantaneous results during measuremen
USB charger for Cobra4 Mobile-Link 2 and Wireless/USB-Link
Cobra4 Wireless/USB-Link incl. USB cable
Cobra4 Sensor-Unit Energy: Current, voltage, work, power
PHYWE Digital Function Generator, USB
Potentiometer 1 kOhm, 0.4W, G2
Resistor 47 kOhm, 1W, G1
Semiconductor diode Si, 1 N 4007, case G1
Semiconductor diode Si, 1 N 4148, case G1
Transistor BC337, base left, G3
Plug-in board, for 4 mm plugs
DMM with NiCr-Ni thermo couple
Connecting cord, 32 A, 250 mm, red
Connecting cord, 32 A, 250 mm, blue
Connecting cord, 32 A, 500 mm, red
Connecting cord, 32 A, 500 mm, blue
PHYWE power supply, 230 V, DC: 0…12 V, 2 A / AC: 6 V, 12 V, 5 A
Software Cobra4 – multi-user licence
- To investigate the dependence of the current strength flowing through a semi-conducting diode.
- To determine the variations of the collector current with the collector voltage for varios values of the base current intensity.
- Semiconductor
- p-n junction
- Energy-band diagram
- Acceptors
- Donors
- Valence band
- Conduction band
- Transistor
- Operating point