Rheostats | Linear & Wirewound | RS
최근 검색 기록

    Rheostats

    A rheostat is a variable resistor which is used to control current or vary resistance within an electrical circuit. They are able to vary the resistance in a circuit without interruption. Rheostats are very similar in construction to potentiometers, but they are designed to work with higher currents. Rheostats are used in motor speed controls, dimmer switches any any applications which require control of the flow of an electric current.

    How do rheostats work?

    Rheostats use two connections, even when 3 terminals are present, the first connection is made to one end of the resistive element and the other connection to the wiper (sliding contact). Resistive wire is wound around an insulating ceramic core, as the wiper slides over the windings the resistance, and therefore current, produced is altered.

    Types of Rheostat

    • Rotary type – Mostly used in power control applications. Rotary rheostats feature a turnable shaft that adjusts the resistance. They are used to control multiple applications in parallel or to increase the power rating or adjusting range.
    • Slide type – Slide rheostats, or linear rheostats, are often used for education and in laboratory environments. Linear or slide types are constructed of resistive wire wound on an insulating cylinder, a sliding contact moves along the winding to increase or decrease the resistance.

    What is the difference between a potentiometer and a rheostat?

    Both a rheostat and a potentiometer are a type of variable resistor. They feature a similar construction, however, a rheostat features 2 terminals and a potentometer features 3 terminals. A primary difference in functionality is that a rheostat is often implemented to change current, while pots can be used to change the voltage within a circuit.

    81 표시되는 제품 Rheostats

    Ohmite
    16Ω
    ±10%
    50W
    1
    Panel Mount
    6.35 mm
    -
    Solder Lug
    58.67 x 34.93mm
    750 Vrms
    -
    -
    34.93mm
    1.76A
    -
    Vishay
    100Ω
    ±10%
    25W
    1
    Panel Mount
    6 mm
    10.5mm
    Solder Lug
    38 x 50mm
    -
    -
    -
    50mm
    -
    +320°C
    Arcol Ohmite
    10Ω
    10%
    25W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    39.62 x 34.93mm
    500 Vrms
    39.62mm
    -
    34.93mm
    1.58A
    -
    Vishay
    100Ω
    ±10%
    12W
    1
    Panel Mount
    3 mm
    6.5mm
    Solder Lug
    22.5 x 40mm
    -
    -
    -
    40mm
    -
    +320°C
    Arcol Ohmite
    25Ω
    10%
    25W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    39.62 x 34.93mm
    500 Vrms
    39.62mm
    -
    34.93mm
    1A
    -
    Ohmite
    25Ω
    ±10%
    150W
    1
    Panel Mount
    6.35 mm
    -
    Solder Lug
    101.6 x 50.8mm
    1200 Vrms
    -
    -
    50.8mm
    2.45A
    -
    Ohmite
    ±10%
    1kW
    1
    Panel Mount
    9.53 mm
    -
    Solder Lug
    304.8 x 76.2mm
    1600 Vrms
    -
    -
    76.2mm
    31.6A
    -
    Arcol Ohmite
    15Ω
    ±10%
    150W
    1
    Panel Mount
    6.35 mm
    -
    Solder Lug
    101.6 x 50.8mm
    1200 Vrms
    -
    -
    50.8mm
    3.16A
    -
    Arcol Ohmite
    250Ω
    ±10%
    25W
    1
    Panel Mount
    6.35 mm
    -
    Solder Lug
    39.62 x 34.93mm
    500 Vrms
    -
    -
    34.93mm
    0.316A
    -
    Arcol Ohmite
    500Ω
    10%
    50W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    58.67 x 34.93mm
    750 Vrms
    58.67mm
    -
    34.93mm
    0.316A
    -
    Vishay
    47Ω
    ±10%
    25W
    1
    Panel Mount
    6 mm
    10.5mm
    Solder Lug
    38 x 50mm
    -
    -
    -
    50mm
    -
    +320°C
    Vishay
    150Ω
    ±10%
    25W
    1
    Panel Mount
    6 mm
    10.5mm
    Solder Lug
    38 x 50mm
    -
    -
    -
    50mm
    -
    +320°C
    Arcol Ohmite
    1.5kΩ
    10%
    25W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    39.62 x 34.93mm
    500 Vrms
    39.62mm
    -
    34.93mm
    0.129A
    -
    Vishay
    100Ω
    ±10%
    55W
    1
    Panel Mount
    6 mm
    10.5mm
    Solder Lug
    60 x 64mm
    -
    -
    -
    64mm
    -
    +320°C
    Arcol Ohmite
    10%
    50W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    58.67 x 34.93mm
    750 Vrms
    58.67mm
    -
    34.93mm
    2.88A
    -
    Arcol Ohmite
    5kΩ
    10%
    25W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    39.62 x 34.93mm
    500 Vrms
    39.62mm
    -
    34.93mm
    0.070A
    -
    Arcol Ohmite
    50Ω
    10%
    25W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    39.62 x 34.93mm
    500 Vrms
    39.62mm
    -
    34.93mm
    0.707A
    -
    Ohmite
    500Ω
    ±10%
    100W
    1
    Panel Mount
    6.35 mm
    -
    Solder Lug
    79.38 x 44.45mm
    1000 Vrms
    -
    -
    44.45mm
    0.447A
    -
    Arcol Ohmite
    50Ω
    10%
    100W
    1
    Panel Mount
    6.35 mm
    -
    Solder
    79.38 x 44.45mm
    1000 Vrms
    79.38mm
    -
    44.45mm
    1.41A
    -
    Vishay
    2.2kΩ
    ±10%
    25W
    1
    Panel Mount
    6 mm
    10.5mm
    Solder Lug
    38 x 50mm
    -
    50mm
    -
    38mm
    -
    +320°C
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