Sliding Rheostat 12 Inch

Product Code : SCL-EAE-11314

The Sliding Rheostat 12 Inch is a laboratory variable resistor used to control current and adjust voltage in low-voltage electrical circuits. Its movable contact changes the effective length of resistance wire connected in the circuit, providing continuous resistance adjustment for school, college and technical laboratory experiments.

Product Description

The apparatus consists of resistance wire wound around an insulated cylindrical support with a contact that moves along a sliding rod. Moving the contact changes the active length of wire between the selected terminal and slider. A longer active winding produces greater resistance, while a shorter length produces lower resistance.

The requested model has a nominal 12-inch configuration, but it must be ordered with a confirmed resistance value and current rating. Lab Equipments Ambala publishes Constantine/Eureka-wire and grooved nichrome-wire rheostat families. The required winding alloy, tube material, terminal format and electrical capacity should be selected according to the intended experiment.

Key Features

• 12-inch configuration: Requested nominal size provides an extended sliding range; exact dimensional reference [confirm].
• Continuous resistance control: The movable contact adjusts the effective resistance without replacing components.
• Double-contact option: The published Constantine-wire rheostat family uses a double-contact sliding system.
• Three-terminal operation: Supports variable-resistor and potential-divider connections when configured accordingly.
• Wire-wound construction: Available product families use Constantine/Eureka or nichrome resistance wire.
• Heat-resistant support: Published rheostat construction uses an insulated support suitable for laboratory operation.
• Manual adjustment: Requires no independent power supply beyond the experimental circuit.

Technical Specifications

What's Included

• One 12-inch sliding rheostat assembly
• Wire-wound insulated resistance tube
• Movable sliding contact and guide rod
• Laboratory connection terminals
• Connecting leads
• Circuit or operating instructions

Applications

• Controlling current in low-voltage electrical circuits.
• Providing an adjustable voltage through a potential-divider connection.
• Conducting Ohm’s law and current-voltage experiments.
• Protecting galvanometers and other sensitive circuit components.
• Adjusting current through lamps, coils and electromagnets.
• Supporting potentiometer, meter-bridge and circuit practicals.

Related equipment includes the Constantine Wire Rheostat, the Nichrome Wire Rheostat, the Plug-Type Resistance Box and broader Electrical and Electronics Equipment.

How to Use the Sliding Rheostat 12 Inch

1. Switch off the laboratory power supply before wiring the circuit.
2. For current control, connect one end terminal and the slider terminal in series with the load.
3. Set the slider initially to provide a high resistance.
4. Switch on the low-voltage supply while monitoring the ammeter.
5. Move the slider gradually until the required current is obtained.
6. For potential-divider use, connect the supply across both end terminals and take the output from the slider.
7. Keep current and power within the confirmed product ratings.
8. Switch off the supply before changing any connections.

Safety note: The winding and support tube can become hot during use. Do not touch them immediately after operation, exceed the rated current or connect the rheostat directly to an unsuitable mains supply.

Care & Maintenance

• Keep the winding clean and free from conductive dust or loose wire fragments.
• Move the slider smoothly and do not force it across damaged winding.
• Inspect terminals, fasteners and contact pressure periodically.
• Allow the rheostat to cool completely before handling or storage.

Why Choose Lab Equipments Ambala

Lab Equipments Ambala manufactures and supplies educational rheostats, resistance boxes and electrical laboratory apparatus from Ambala, India. Its published rheostat range includes Constantine/Eureka-wire and nichrome-wire configurations with sliding contacts and three-terminal operation. The equipment supports schools, colleges and institutional laboratories. Buyers should specify the required 12-inch dimension, resistance value, current rating and winding material when requesting a quotation.

Frequently Asked Questions

What is a Sliding Rheostat 12 Inch used for?

It is used to vary resistance, control current and provide adjustable voltage in educational electrical circuits.

What does the 12-inch size refer to?

It may refer to the resistance-tube length, winding length or overall nominal size. The dimensional reference must be confirmed.

What resistance value is supplied?

The resistance value is not determined by physical length alone and must be selected separately in ohms.

Which resistance wire is used?

Lab Equipments Ambala publishes Constantine/Eureka and nichrome rheostat families. The required alloy must be confirmed for this model.

Can the rheostat be used as a potential divider?

Yes, when it has the required three-terminal arrangement and is connected across a suitable low-voltage supply.

Does it require a separate power supply?

No. The rheostat is a passive component, but it must be connected within a suitable experimental circuit.

Specify the required resistance, current rating, winding alloy and exact 12-inch dimensional reference, or explore the Electrical and Electronics Equipment category for related rheostats.