Cometek Rheostat - Linear Type Sliding Rheostat - 10 Ohms : 5 Ampere

• Maximum Current Capacity: 5 A (Amperes)
• Maximum Resistance: 10 (Ohms)

Features

• Thermal-Shock Ceramic Core: Utilizes a dense, non-porous ceramic tube framework built to tolerate high thermal loads without physical bowing, cracking, or losing insulation resistance.
• Low-Resistance Slider Mechanism: Engineered with an anti-friction guide bar and high-tension contact wipers that sweep cleanly across the wire track for constant electrical connection.
• Multipurpose 3-Terminal Layout: Features dual base terminals and a dedicated upper slider connection, allowing the device to switch instantly from a 2-terminal rheostat (current controller) to a 3-terminal potentiometer (voltage divider).
• Stabilized Die-Cast Side Pillars: Locked together using impact-resistant metal or reinforced polymer end brackets that secure the tube array and isolate the chassis from table contact.

Applications

• Wheatstone Bridge Balance Controls: Functions as a robust, manually adjustable resistance arm to balance bridge configurations during precision unknown resistance calculations.
• DC Motor Speed Regulation Models: Acts as an inline manual speed controller within educational motor-control circuits by safely altering armature current feeds.
• Battery Internal Resistance Testing: Used as a steady, heavy-duty dump load to draw constant currents from battery cells, allowing students to map discharge voltage drops over time.
• Light Emitting Diode Dimming Matrix: Serves as a protective current-limiting barrier to safely map characteristic operating curves of high-output bulbs and semiconductor devices.