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 891-5411
製造零件編號RHS2K5E
HK$418.09
單位
2.5kΩ ±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 144-5530
製造零件編號RHS5K0E
HK$549.06
單位
5kΩ 10% 25W 300 ° Panel Mount 6.35 mm - Solder 39.62 (Dia.) x 34.93mm 39.62 (Dia.)mm - 34.93mm - Linear Shaft
RS庫存編號 891-5408
製造零件編號RHS25KE
HK$393.07
單位
25kΩ ±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 891-5420
製造零件編號RHS3K5E
HK$340.64
單位
3.5kΩ ±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 891-5430
製造零件編號RHS5K0E
HK$305.06
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 891-5351
製造零件編號RES5K0E
HK$269.39
單位
5kΩ ±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 891-5294
製造零件編號RCS100E
HK$1,537.558
/個 (每包:5個)
單位
100Ω ±10% 7.5W 300 ° Panel Mount 3.18 mm - Solder Lug 13.08 (Dia.) x 15.88mm - - 15.88mm - Linear Shaft
RS庫存編號 891-5354
製造零件編號RES500E
HK$238.03
單位
500Ω ±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 891-5345
製造零件編號RES3R0E
HK$244.63
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 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 891-5395
製造零件編號RHS1R0E
HK$287.09
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 891-5414
製造零件編號RHS2R0E
HK$277.76
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 144-5538
製造零件編號RKS25RE
HK$875.56
單位
25Ω 10% 100W 300 ° Panel Mount 6.35 mm - Solder 79.38 (Dia.) x 44.45mm 79.38 (Dia.)mm - 44.45mm - Linear Shaft
RS庫存編號 891-5341
製造零件編號RES3K5E
HK$350.292
/個 (每包:5個)
單位
3.5kΩ ±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 891-5382
製造零件編號RHS15KE
HK$369.27
單位
15kΩ ±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 891-5509
製造零件編號RJS500E
HK$325.34
單位
500Ω ±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 891-5385
製造零件編號RHS15RE
HK$257.81
單位
15Ω ±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 144-5529
製造零件編號RHS50RE
HK$480.99
單位
50Ω 10% 25W 300 ° Panel Mount 6.35 mm - Solder 39.62 (Dia.) x 34.93mm 39.62 (Dia.)mm - 34.93mm - Linear Shaft
RS庫存編號 891-5376
製造零件編號RHS100E
HK$431.50
單位
100Ω ±10% 25W 300 ° Panel Mount 6.35 mm - Solder Lug 39.62 (Dia.) x 34.93mm - - 34.93mm - Linear Shaft