Rheostats

A rheostat is a variable resistor which is used to control current within an electrical circuit. They are able to vary the resistance in a circuit without interruption. Rheostats are very similar in construction to potentiometers.
How Rheostats Operate
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.
Rheostat Types
Several types of rheostats exist, with varying functions and applications.
• 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 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.

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Description Price Maximum Resistance Tolerance Power Rating Number of Turns Mounting Type Shaft Diameter Mounting Hole Diameter Termination Style Dimensions Depth Height Length Maximum Operating Temperature Actuator Type
RS庫存編號 891-5442
製造零件編號RHS750E
TWD2,144.00
單位
750Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 827-6397
製造零件編號VRH320 33R K
BrandArcol
TWD8,077.00
單位
33Ω - - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS庫存編號 891-5395
製造零件編號RHS1R0E
TWD2,246.00
單位
±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 891-5534
製造零件編號RJSR50E
BrandOhmite
TWD3,119.00
單位
500mΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 891-5483
製造零件編號RJS22RE
BrandOhmite
TWD2,532.00
單位
22Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 167-9917
製造零件編號RT500AS1001KB
BrandVishay
TWD33,427.20
/個 (每包:25個)
單位
1kΩ ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS庫存編號 891-5537
製造零件編號RKS100E
BrandOhmite
TWD3,235.00
單位
100Ω ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS庫存編號 891-5486
製造零件編號RJS2K5E
BrandOhmite
TWD2,936.00
單位
2.5kΩ ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 144-5522
製造零件編號RES50RE
TWD1,635.00
單位
50Ω 10% 12.5W 300 ° Panel Mount 3.18 mm - Solder 22.23 (Dia.) x 17.46mm 22.23 (Dia.)mm - 17.46mm - Linear Shaft
RS庫存編號 167-8618
製造零件編號RT025AS2201KB
BrandVishay
TWD3,751.10
/個 (每包:25個)
單位
2.2kΩ ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 Dia.x 50mm 50mm - 38 (Dia.)mm +320°C -
RS庫存編號 893-5187
製造零件編號RGS7R5E
BrandOhmite
TWD3,609.60
/個 (每包:5個)
單位
7.5Ω ±10% 75W 300 ° Panel Mount 6.35 mm - Solder Lug 69.25 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft
RS庫存編號 891-5402
製造零件編號RHS25RE
TWD2,138.00
單位
25Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 891-5521
製造零件編號RJS80RE
BrandOhmite
TWD2,663.00
單位
80Ω ±10% 50W 300 ° Panel Mount 6.35 mm - Solder Lug 58.67 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 892-6698
製造零件編號RES125E
BrandOhmite
TWD1,825.00
單位
125Ω ±10% 12.5W 300 ° Panel Mount 3.18 mm - Solder Lug 22.23 (Dia.) x 17.46mm - - 17.46mm - Linear Shaft
RS庫存編號 892-2412
製造零件編號RPS200E
BrandOhmite
TWD7,534.60
/個 (每包:10個)
單位
200Ω ±10% 225W 310 ° Panel Mount 9.53 mm - Solder Lug 127 (Dia.) x 53.98mm - - 53.98mm - Linear Shaft
RS庫存編號 893-5459
製造零件編號RNS75R
BrandOhmite
TWD9,265.60
/個 (每包:5個)
單位
75Ω ±10% 300W 320 ° Panel Mount 9.53 mm - Solder Lug 152.4 (Dia.) x 60.33mm - - 60.33mm - Linear Shaft
RS庫存編號 168-0066
製造零件編號RT012AS1000KB
BrandVishay
TWD4,496.40
/個 (每包:25個)
單位
100Ω ±10% 12W 1 Panel Mount 3 mm 6.5mm Solder Lug 22.5 (Dia.) x 40mm - - 40mm +320°C -
RS庫存編號 891-5430
製造零件編號RHS5K0E
TWD1,794.00
單位
5kΩ ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft
RS庫存編號 891-5571
製造零件編號RLS100E
BrandOhmite
TWD4,826.00
單位
100Ω ±10% 150W 300 ° Panel Mount 6.35 mm - Solder Lug 101.6 (Dia.) x 50.8mm - - 50.8mm - Linear Shaft
RS庫存編號 891-5540
製造零件編號RKS1K0E
BrandOhmite
TWD4,606.00
單位
1kΩ ±10% 100W 300 ° Panel Mount 6.35 mm - Solder Lug 79.38 (Dia.) x 44.45mm - - 44.45mm - Linear Shaft