ESAW Four Probe Apparatus (EEC-11385)

ESAW Four Probe Apparatus (EEC-11385)

The experiment consists of the following :-

(a) Four Probe Arrangement 0

(b) Oven(up to 200 C)with a power supply

(c) Sample : ‘Ge’ Crystal

(d) Four Probe Setup,Model DFP -02

This unit consists of the following :

Constant Current Generator

Open Circuit Voltage : 18V

Current Range : 0-20mA

Resolution : 10?A

Accuracy : ±0.25% of the reading ± digit

Load Regulation : 0.03%for no load tofull load.

Line Regulation : 0.05%for ±10%ofmains changes. MultiRangeDigital voltmeter

Range : XI(0-200 mV) and X 10 (0-2V)

Resolution : 100?V at XIRange

Accuracy : ± 0.1%of reading ± 1 digit

Impedance : 1 M ohm

Display : 3½digit, 7 segment LED (12.5 mm) height with auto polarity and decimal indication.

Power Supply : 220 V±10%50 Hz