Constantan Resistance

Constantan Resistance 
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Resistance Wires
COMPANY : 3B SCIENTIFIC GERMANY

Metal wires on bobbins, e.g. for experiments to investigate how resistance depends on the material, cross-sectional area and length of the wire.

Four resistance decades in a single housing, can be used individually or in combination, e.g. for setting up a Wheatstone bridge. Can be set using control knob, with decade scale.

→ Output: via 4 mm safety sockets
→ Max. current: 700 mA (1 Ω − 10 Ω),
200 mA (10 Ω − 100 Ω), 70 mA (100 Ω − 1 kΩ), 20 mA (1 kΩ − 10 kΩ)
→ Accuracy: 1%
→ Dimensions: approx. 310x90x80 mm³
→ Weight: approx. 1 kg

Resistance Bridge used to measure resistances in bridge circuits and investigate voltage drops across wires. The device is only suitable for low voltages.

It consists of a rail with a scale mounted at two points and a resistance wire stretched between two connecting sockets. A sliding contact on the resistance wire is used to set the resistance of the resultant two wire sections. A Wheatstone bridge circuit is configured to determine unknown resistances.

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