High-quality interchangeable board with an undoped germanium crystal for investigating the conductivity of undoped germanium as a function of temperature. With contacts for transverse current, integrated resistive heating element with temperature sensor directly under the crystal, and multi pin plug for connecting the circuit board to the basic Hall effect apparatus (U8487000).
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![N-Doped Germanium on Printed Circuit Board, 1009760 [U8487030], Hall-effect](/thumblibrary/U8487030/U8487030_01_140_140_N-Doped-Germanium-on-Printed-Circuit-Board.jpg)
![P-Doped Germanium on Printed Circuit Board, 1009810 [U8487020], Hall-effect](/thumblibrary/U8487020/U8487020_01_140_140_P-Doped-Germanium-on-Printed-Circuit-Board.jpg)
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![Coil D with 600 Turns, 1000988 [U8497430], Demountable Transformer D](/thumblibrary/U8497430/U8497430_01_140_140_Coil-D-with-600-Turns.jpg)
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![Universal Clamp, 1002830 [U13255], Clamps](/thumblibrary/U13255/U13255_01_140_140_Universal-Clamp.jpg)
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![Tubing, Silicone 6 mm, 1002622 [U10146], Hose, Flow hose](/thumblibrary/U10146/U10146_01_140_140_Tubing-Silicone-6-mm.jpg)
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![Tripod Stand 150 mm, 1002835 [U13270], Bases](/thumblibrary/U13270/U13270_01_140_140_Tripod-Stand-150-mm.jpg)
![Pair of Safety Experiment Leads, 75 cm, 1002849 [U13812], Experiment Leads and Cables](/thumblibrary/U13812/U13812_01_140_140_Pair-of-Safety-Experiment-Leads-75-cm.jpg)
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