Engg-BE Btech 1st Year- Four Probe Method

Band gap of Semi-Conductor Energy Gap in Ge Crystal 4 Probe Resistivity Method Electronic Trainer setup kit with power supply AE-1204RGE

Built in constant current source and Milli-voltmeter

Easy change of sample

With mini Heating Oven complete in all respect.

The Four Probe Method is one of the standard and most widely used methods for the measurement of resistivity of semi-conductors. effective resistance of the voltage measuring device

Probe Arrangement         Four individually spring loaded

Sample : Germanium crystal in the form of a chip.

Oven : It is a small oven for the variation of temperature.

Four Probe Set-up           : Set-up consists units

(i)  Digital Voltmeter        0-200mV) & 0-2Vx10x

Display 3-1/2 digit,             7 segment LED (12.5 mm height)

auto polarity and decimal      Overload Indicator

(ii) Constant Current Generator      Specifications:

    Open Circuit Voltage         18 V

    Current Range                   0 - 20 mA    Resolution   10 uA

    Accuracy                           + 0.25% of the reading + 1 digit

    Load Regulation                 0.03% for 0 to full load

    Line Regulation                  0.05% for 10% changes

(iii) Oven Power Supply

Glowing LED indicates when the oven power supply is 'ON'.

*  Complete with Manual and Connection Wire.

Cat No         Item           with Power Supply                          meters

AE-1204RGE    Band Gap of GE Crystal semi-conductor diode digital

                     4 four probe method mini oven temp controlled

                     power supply electronic trainer set up kit abron