Rheostat Dials

Rheostat dials are a component of rheostats, a type of two-terminal variable resistormade up of one end contact and a wiper. The dials are used to display the degree of change in resistance that is made when a user turns the rheostat knob.

How do rheostats work?

Rheostats are a common way to vary the resistance in a circuit. They are now often referred to by the more general term potentiometer. A user turns a rheostat knob to point to a given number on the dial, which alters the resistance of the device. Higher power rheostats use a wire wound around an insulator, and the resistance changes depending on where on the wire the wiper is positioned.

Types of rheostat dials

Rheostat dials differ depending on their function. Some are simply a kind of flat panel display engraved with numbers, while others have a protruding dial with numbers on it, designed to be used with a shaft.


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Description Price Accessory Type For Use With Inner Diameter
RS庫存編號 167-9915
製造零件編號ACCRFCADRANCG78
BrandVishay
HK$188.65
/個 (每包:5個)
單位
Panel Dial Rheostat 78mm
RS庫存編號 788-5189
製造零件編號ACCRFCADRANCG78
BrandVishay
HK$188.65
單位
Panel Dial Rheostat 78mm
RS庫存編號 144-2052
製造零件編號2696
HK$71.651
個 (以毎盒:20)
單位
Turns Counting Dial 1/4 in Shaft 10.3mm
RS庫存編號 788-5176
製造零件編號ACCRFCADRANCG115
BrandVishay
HK$202.50
單位
Dial - 115mm
RS庫存編號 788-5170
製造零件編號ACCRFCADRANCG57
BrandVishay
HK$161.19
單位
Dial - 56mm
RS庫存編號 137-4576
製造零件編號A 60 16 019
BrandOKW
HK$21.69
單位
- - -
RS庫存編號 788-5132
製造零件編號ACCRFCADRANCG45
BrandVishay
HK$152.00
單位
Dial - 45mm
RS庫存編號 144-2203
製造零件編號2696
HK$75.61
單位
Turns Counting Dial 1/4 in Shaft 10.3mm
RS庫存編號 167-9902
製造零件編號ACCRFCADRANCG45
BrandVishay
HK$175.498
/個 (每包:5個)
單位
Dial - 45mm
RS庫存編號 167-9904
製造零件編號ACCRFCADRANCG57
BrandVishay
HK$161.19
/個 (每包:5個)
單位
Dial - 56mm
RS庫存編號 2508972852
製造零件編號15-1-11
BrandVishay
HK$333.76
單位
- - -