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Engg-BE Btech 1st Year-Band Gap four 4 probe method Determination of a Semiconductor
-16%
Model : AR-1020-A AE-1204R

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Department All Practical Physics




Description

Engineering-BE Btech 1st Year- Apparatus Reqiuired-Four ponit probe arrangement, a measuring unit (consisting of three subunits 1. multrirange digital voltmeter, 2. Constant current generator and 3. oven power supply) a thermometer,an oven ther given sample etc

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

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-1204R   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

 


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