IndiaMART.com
Suppliers
or Post Buy Requirement
Indiamart
Trade Offers  >  Scientific Instruments & Supplies  >  Scientific Instruments & Devices  >  Physics Equipment

Hall Effect Experiment Apparatus

 - Roorkee

Hall Effect Experiment Apparatus
Offer Active Since: 15 Oct, 2008 | Last Updated: 31 Jul, 2013Offer Details:
We offer Hall Effect  Experiment usefull in physics and material science labs. The resistivity measurements of semiconductors cannot reveal whether one or two types of carriers are present; nor distinguish between them. However, this information can be obtained from Hall Coefficient measurements, which are also basic tools for the determination of carrier density and mobilities in conjuction with resistivity measurement.
As you are undoubtedly aware, a static magnetic field has no effect on charges unless they are in motion. When the charges flow, a magnetic field directed perpendicular to the direction of flow produces a mutually perpendicular force on the charges. When this happens, electrons and holes will be separated by opposite forces. They will in turn produce an electric field (Eh) which depends on the cross product of the magnetic intensity, H, and the current density, Jh = RJ x H
Where R is called the Hall coefficient.
Now, let us consider a bar of semiconductor, having dimension, x, y and z. Let J is directed along X and H along Z then Eh will be along Y, as in Fig. 2.
Then we could write
 
Where Vh is the Hall voltage appearing between the two surfaces perpendicular to y and I = Jyz

Hall Effect experiment consists of the following:


(a) Hall Probe (Ge Crystal);

  • Material: Ge single crystal n or p-type
  • Resistivity: 8-10 Ωcm.
  • Contacts: Spring type (solid silver)
  • Zero-field potential: <1mV (adjustable)
  • Hall Voltage: 35-60mV/10mA/KG

(b) Hall Probe (InAs)

  • Contacts: Soldered
  • Rated Control Current: 4mA
  • Zero Field Potential: <4mV
  • Linearity (0-20KG): ±0.5% or better
  • Hall Voltage: 60-70mV/4mA/KG

Hall Effect Set-up (Digital), DHE-21

DHE-21 is a high performance instrument of outstanding flexibility. The set-up consists of a digital millivoltmeter and a constant current power supply. The Hall voltage and probe current can be read on the same digital panel meter through a selector switch. It consists of the following:

(i) Digital Microvoltmeter:

  • Range: 0-200mV (Resolutio 100μV)
  • Accuracy: ±0.1% of reading ±1 digit
  • Impedance: 1Mohm
  • Display: 3½ digit, 7segment LED

(ii) Constant Current Generator:

  • Current: 0-20mA (Resolution 10μA)
  • Display: 3½ digit, 7segment LED
  • Accuracy: 0.25%; ±1 digit
  • Load regulation: 0.03% for 0 to full load
  • Line regulation: 0.05% for 10% variation
Electromagnet, EMU-75 or EMU-50V
Constant Current Power Supply, DPS-175 or DPS-50
Digital Gaussmeter, DGM-102

The experiment is complete in all respect.

Contact this Supplier NOW !




Next Offer   ►

10yr

SES Instruments Pvt. Ltd. (Estd.1971)

Mr. Ravi Prakash (CEO)
Roorkee, Uttarakhand, India

+(91)-8588802339



Send E-mail /SMS Enquiry   

Message:


More Offers in Physics Equipment

Deflection Magnetomete...
Deflection Magnetomete...

Offering deflection magnetometer. Compass... more...

Edutek Instrumentation
Ambala (India)
Send Enquiry
Physics Lab Equipments

We are a trusted Supplier of variety... more...

4P Lab Solution
Ambala (India)
Send Enquiry
Simple Key
Simple Key

On vulcanite base.Palmer Research and... more...

Microteknik
Ambala (India)
Send Enquiry
Electroscope, Pith Bal...
Electroscope, Pith Bal...

Product description: We have mounted an... more...

ATICO Medical Pvt. Ltd
Ambala (India)
Send Enquiry
Weight Box
Weight Box

Backed by diligent professionals, we have... more...

Shamboo Scientific Gla...
Ambala (India)
Send Enquiry
Periscope
Periscope

We are Manufacturer, Exporter & Supplier... more...

Advanced Technocracy I...
Ambala (India)
Send Enquiry


Indiamart

Indiamart

Terms of Use - Privacy Policy - Link to Us

Copyright © 1996-2014 IndiaMART InterMESH Ltd. All rights reserved.