Rheostat
For laboratory use as a variable series resistance or as a potentiometer. Can control current and voltage.
Made from heat resistant, air cooled, hollow porcelain tube closely wound with a resistance wire of copper nickel alloy which is previously oxidized to provide perfect insulation. The end supports are made of metal with provision for screw mounting. A bakelite slider carries a phosphor bronze contact which can be moved rapidly and smoothly and can rest anywhere along the winding. The insulation is sand-papered off where the slider makes contact. Resistance in ohms and current carrying capacities are engraved on contact carriage. Three terminals are provided for electrical connections, one at each end of the winding and the third at one end of the slide rod so that the unit can be used either as a rheostat or as a potentiometer.
Available with a variety of resistances and current carrying capacities.
Power ratings (watts) can be calculated as Watts = (Current in amperes) 2x Resistance in ohms
| Max. Current Amps | Resistance Ohms | Cat. No. |
| 3.3 | 11 | 3149-21 |
| 3.3 | 22 | 3149-22 |
| 5.0 | 11 | 3149-23 |
| 5.0 | 15 | 3149-24 |
| 6.5 | 7.5 | 3149-25 |
| 6.5 | 13 | 3149-26 |
| 8.0 | 2.5 | 3149-27 |
| 8.0 | 4.5 | 3149-28 |
| 8.0 | 8.5 | 3149-29 |
| 0.3 | 1700 | 3149-30 |
| 1.0 | 175 | 3149-31 |
| 1.6 | 100 | 3149-32 |
| 1.8 | 92 | 3149-33 |
| 2.3 | 34 | 3149-34 |
| RHEOSTAT METAL ENAMELLED PIPE | ||
| 3.3 | 21 | 3150-21 |
| 5.0 | 14.2 | 3150-22 |
| 6.5 | 8.0 | 3150-23 |
Caution: Rheostat of unprotected design should not be used on electric supplies more than 50 volts.

Price:
Price Range 100.00 - 1000.00 INR / Piece
Minimum Order Quantity : 10 Pieces
Usage : For Laboratory and College Purpose
Feature : Long Working Life and High Strength
Product Type : Electrodes Flat
Material : Aluminium, Carbon, Copper and Zinc
Price Range 50.00 - 450.00 INR / Piece
Minimum Order Quantity : 10 Pieces
Usage : For Experiments in Detection of Electric charge and Determination of Polarity
Feature : Long Working Life and High Strength
Product Type : Electroscope
Material : Rubber, Aluminium and Glass
Price Range 150.00 - 1500.00 INR / Piece
Minimum Order Quantity : 10 Pieces
Usage : For Science Laboratory
Feature : Durable and High Functionality
Product Type : Electrolysis Cell
Material : Glass, Metal and Rubber
Price Range 50.00 - 350.00 INR / Piece
Minimum Order Quantity : 10 Pieces
Usage : For Providing Momentary Contact in electrical circuits which are normally open
Feature : Long Working Life and High Strength
Product Type : Contact Tapping Key
Material : Bakelite and Metal