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
