Basic apparatus for providing contact, power supply and support to a germanium crystal on a circuit board (U8487010, U8487020 and U8487030) in experiments on the Hall effect or on conductivity. Includes an integrated, adjustable constant current source to provide the current through the sample, a measuring amplifier with offset compensation for Hall voltages and heating to raise the crystal to as high as 170°C, also featuring temperature regulation and a switchable display showing Hall voltage, sample current, sample voltage or temperature.
Hall voltage and sample voltage can be tapped directly from the front panel. In addition three equivalent voltage outputs for Hall voltage, sample current and sample temperature can be measured from the side. Includes an attachment for assembling the apparatus on the U-shaped core (U8497215) of a transformer assembly kit and 2 connecting leads with 8-pin miniDIN plugs.
Experiment topics:
- Extrinsic conductivity
- Intrinsic conductivity
- Mobility of electrons and holes
- Drift velocity of charge carriers
- Carrier concentration
- Band separation
- Outputs for equivalent voltages: 4-mm safety sockets
- 8-pin miniDIN sockets (3BNETlog compatible)
- Power supply: 12 V AC, 3 A via 4-mm sockets
- Dimensions: 180x110x50 mm³ approx.
- Weight: 0,5 kg approx.
Coil D with 600 Turns
Secondary coil for use with the U-core with Yoke (U8497180) to generate low- or high-voltage outputs. Coils are covered with impact resistant plastic so that they are safe to touch and use safety connection sockets.
Specifications:
- Number
Item: U8497430
$ 120.00
DC Power Supply 20 V, 5 A (115 V, 50/60 Hz)
Universal power supply with digital current and voltage display. Output voltage and output current are continuously adjustable. The device can be used as a constant voltage source with current limiting or as a constant current source with voltage limiting ...
Item: U33020-115
$ 240.00
DC Power Supply 20 V, 5 A (230 V, 50/60 Hz)
Universal power supply with digital current and voltage display. Output voltage and output current are continuously adjustable. The device can be used as a constant voltage source with current limiting or as a constant current source with voltage ...
Item: U33020-230
$ 290.00
Magnetic Field Sensor, Axial/Tangential
This magnetic-field sensor comprises two integrated Hall sensors for measuring axial and tangential magnetic fields in conjunction with the Teslameter E or the Microvoltmeter. A slide switch is used to changeover between axial and tangential field measurements ...
Item: U8533997
$ 331.00
Microvoltmeter (115 V, 50/60 Hz)
Measuring instrument and amplifier for measuring very small DC and AC voltages, e.g. thermovoltages, inductive voltages and photo-electric voltages. With LED display. The measuring input includes a filter that can be switched in for smoothing the signal ...
Item: U8530501-115
$ 1,219.00
Microvoltmeter (230 V, 50/60 Hz)
Measuring instrument and amplifier for measuring very small DC and AC voltages, e.g. thermovoltages, inductive voltages and photo-electric voltages. With LED display. The measuring input includes a filter that can be switched in for smoothing the ...
Item: U8530501-230
$ 1,197.00
N-Doped Germanium on Printed Circuit Board
High-quality interchangeable board with an n-doped germanium crystal for investigating the conductivity and Hall potential for n-doped germanium as a function of temperature. With contacts for transverse current and Hall potential, integrated resistive ...
Item: U8487030
$ 729.00
Pair of Pole Shoes and Clamping Brackets for Hall Effect
Pair of pole pieces for experiments on the semiconductor Hall effect. Including clamping brackets for mounting on the U-core (U8497215).
Specifications:
- Pole shoe dimensions: 40x40x75 mm³
- Total weight: approx. 2 kg
Item: U8497205
$ 99.00
P-Doped Germanium on Printed Circuit Board
High-quality interchangeable board with an p-doped germanium crystal for investigating the conductivity and Hall potential for p-doped germanium as a function of temperature. With contacts for transverse current and Hall potential, integrated resistive ...
Item: U8487020
$ 729.00
Set of 15 Safety Experiment Leads, 75 cm
For electrical circuits with low voltages and high currents; copper wire encased in highly flexible PVC; equipped at either end with a laminated safety plug and a fully-insulated axial jack for connecting additional patch cords.
Wire cross-section ...
Item: U138021
$ 105.00
Teslameter E
Hand-held meter for measuring magnetic flux density or magnetic field strength in conjunction with an Axial/Tangential Field Sensor or a Flexible Magnetic Field Sensor. The measurements are shown on a digital display and also converted into equivalent ...
Item: U8533982
$ 650.00
Transformer with Rectifier 3/6/9/12 V, 3 A (115 V, 50/60 Hz)
Extra low-voltage power supply with overload protection contained in plastic housing. Output voltage has four switchable stages.
Specifications:- AC output: 3/ 6/ 9/ 12 V
- DC output: 3/ 6/ 9/ 12 V
- Max. AC current: 3 A
- Max. DC current
Item: U33300-115
$ 153.00
Transformer with Rectifier 3/6/9/12 V, 3 A (230 V, 50/60 Hz)
Extra low-voltage power supply with overload protection contained in plastic housing. Output voltage has four switchable stages.
Specifications:- AC output: 3/ 6/ 9/ 12 V
- DC output: 3/ 6/ 9/ 12 V
- Max. AC current: 3 A
- Max. DC current
Item: U33300-230
$ 153.00
U-core with no Yoke Clamps
U shaped core with no yoke for use with Transformer Core D items.
Item: U8497215
$ 118.00
Undoped Germanium on Printed Circuit Board
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 ...
Item: U8487010
$ 729.00
