Resistivity Of Semiconductors By Four Probe Method

Power	AC Mains
Usage/Application	Laboratory
Model Name/Number	AE 220
Type	Digital
Material	Metal
Color	gray
Power Supply	ac mains
Display Type	digital

Resistivity of semiconductors by four probe method at different Temperatures & Determination of Band gap

The experiment consists of the following :

 

(i) Four Probe Arrangement

 

(ii) Oven (upto 200C)

 

(iii) Sample : Ge Crystal mounted

 

(iv) Thermometer (0-200C)

 

(v)Four Probe Setup

 

(a) Constant Current power supply digital Accuracy : 0.25% of the reading 1 digit Load Regulation : 0.03% for no load to full load

 

(b)Electronic Millivoltmeter 200 mV Accuracy : 0.1% of reading = 1 digit Impedence : 1 Mohm

 

Display : 3 digit, 7 segment LED (12.5mm) height with auto polarity and decimal indication.