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  • Classification: Other
  • Place of Origin: Haryana, India


Resistivity of Semiconductors by Four Probe Method



Resistivity of Semiconductors by Four Probe Method at Different
Temperatures and Detemination of Band- Gap  
The experiment consists of the following :   
1 Four Probe Arrangement     
2 Oven (upto 200o C)     
3 Sample :  Ge Crystal mounted    
4 Thermometer (0-200o C)    
5 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 1/2 digit, 7 segment LED (12.5mm)  m) height with auto polarity and decimal 


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