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Home » Products » Physics Lab Instruments » Four Probe Experiment Setup

Four Probe Experiment Setup

Four Probe Experiment Setup
Four Probe Experiment Setup
Product Code : ATPH050
Brand Name : ATICO
Product Description


 Resistivity of Semiconductors by Four Probe Method at Different

Temperatures and Determination of the Band-Gap. (Basic Model)

The experiment consists of:

(a) Four Probe Arrangement (Spring Type)
(b) Oven up to 200°C
(c) Sample: Ge Crystal N or P type
(d) Thermometer :( 0-2000C)
(e) Digital Four Probe Set-up 

The set up consists of the following three units.

(I) Multirange Electronic Millivolt meter

  • Range: X1 (0-200mV) and X10 (0-2V)
  • Resolution: 100 μV at x 1 range
  • Input Impedance: 1 M ohm
  • Accuracy: + 0.2% of the reading +1digit
  • Display: 3 ½ digit, 7 segments LED
  • Special Feature: with auto polarity and decimal indication.

(ii) Constant Current Source

  • Current: 0-20 mA or as required
  • Open circuit voltage: 18 V
  • Load Regulation: 0.03% for no load to full load
  • Line Regulation: 0.05% for 10% main variation
  • Accuracy: + 0.25% of the reading+1digit
  • Power: 220 V + 10%, 50 Hz 

(iii) Oven power Supply: To provide suitable voltage for the oven with provision

For L & H rates of heating.

 Complete in all respect with manual and test results


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