Energy Gap In GE Crystal Method

  For measurement of Resistivity in GE crystal

Four Probe Set-up : Set Up Consist of 3 unit:

(i) Multi Range Digital Voltmeter 

Rang : (0-2.000 V)                                             Resolution : 100 uA At X 1 range

Accuracy : +0.1 % of reading + 12 digit                Display : 3-1/2 digit, 7 segment

(II)  Constant Current Generator :

      Open circuit voltage : 8V             Current range      : 0-20 mA

Resolution       : 10 uA                        Accuracy : +0.25% of the reading + 1 digit

(III)  Oven power supply : a switch is provided for heating the oven with low & high facility.