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 168-0120
製造零件編號RT025AS1500KB
BrandVishay
HK$810.25
/個 (每包:25個)
單位
150Ω ±10% 25W 1 Panel Mount 6 mm 10.5mm Solder Lug 38 (Dia.) x 50mm - - 50mm +320°C -
RS庫存編號 892-2453
製造零件編號RUS10RE
BrandOhmite
HK$7,194.194
/個 (每包:5個)
單位
10Ω ±10% 1kW 335 ° Panel Mount 9.53 mm - Solder Lug 304.8 (Dia.) x 76.2mm - - 76.2mm - Linear Shaft
RS庫存編號 891-5519
製造零件編號RJS6R0E
BrandOhmite
HK$388.73
單位
±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 891-5317
製造零件編號RES175E
HK$287.31
單位
175Ω ±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 891-5626
製造零件編號RNS200E
BrandOhmite
HK$1,771.41
單位
200Ω ±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 144-5521
製造零件編號RES100E
HK$422.81
單位
100Ω 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 891-5452
製造零件編號RJS125E
BrandOhmite
HK$319.90
單位
125Ω ±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 891-5391
製造零件編號RHS1K5E
BrandOhmite
HK$312.18
單位
1.5kΩ ±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 891-5607
製造零件編號RLS4K5E
BrandOhmite
HK$781.54
單位
4.5kΩ ±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 892-8423
製造零件編號RES5R0E
BrandOhmite
HK$312.176
/個 (每包:10個)
單位
±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 891-5433
製造零件編號RHS500E
HK$257.81
單位
500Ω ±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 893-4279
製造零件編號RHL5K0E
BrandOhmite
HK$350.58
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 892-2510
製造零件編號5E-100
BrandOhmite
HK$3.896
/個 (每包:50個)
單位
- - 8 W, 12 W - - - - - - - - - - -
RS庫存編號 891-5470
製造零件編號RJS1R0E
BrandOhmite
HK$365.73
單位
±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 144-5532
製造零件編號RJS1K0E
HK$561.13
單位
1kΩ 10% 50W 300 ° Panel Mount 6.35 mm - Solder 58.67 (Dia.) x 34.93mm 58.67 (Dia.)mm - 34.93mm - Linear Shaft
RS庫存編號 827-6413
製造零件編號VRH320 100R K
BrandArcol
HK$1,952.63
單位
100Ω - - - Surface Mount - - Solder Lug 446 x 93 x 150mm 93mm 150mm 446mm - Slide
RS庫存編號 167-9907
製造零件編號RT500AS1000KB
BrandVishay
HK$13,423.607
/個 (每包:25個)
單位
100Ω ±10% 500W 1 Panel Mount 10 mm 12mm Solder Lug 143 (Dia.) x 158mm - - 158mm +320°C -
RS庫存編號 893-5197
製造零件編號RLS1K8
BrandOhmite
HK$1,142.714
/個 (每包:5個)
單位
1.8kΩ ±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
HK$610.04
單位
1kΩ ±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 167-9894
製造零件編號RT100AS22R0KB
BrandVishay
HK$2,606.589
/個 (每包:25個)
單位
22Ω ±10% 100W 1 Panel Mount 6 mm 10.5mm Solder Lug 85 (Dia.) x 81mm - - 81mm +320°C -