Quick Answer: The Sliding Rheostat Dual Tube has two resistance tubes mounted in parallel, wound with oxidised constantan wire. Phosphor bronze spring contacts on the slider pick off the resistance.
Last updated: October 2026
Key Features
Two tubes in a parallel assembly
Oxidised constantan resistance wire with a low temperature coefficient
Phosphor bronze spring contacts on the slider
4mm brass terminals
End supports with mounting holes
Technical Specifications
Specification
Value
Configuration
Dual tube, parallel
Resistance wire
Oxidised constantan
Slider contacts
Phosphor bronze spring
Terminals
4mm brass
About This Product
A sliding rheostat changes the resistance in a circuit as the slider moves along the winding. It is used to control current, as a potential divider to give a variable voltage, and to take a set of readings when verifying Ohm’s law.
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