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参数资料
| 型号： | H-38-11 |
| 厂商： | Bourns Inc. |
| 文件页数： | 29/73页 |
| 文件大小： | 0K |
| 描述： | HDWR NUT MOUNTING FOR ECW ENCODR |
| 产品变化通告： | H-38-11 Hardware Change 26/Jul/2010 |
| 标准包装： | 1,000 |
| 产品目录页面： | 2575 (CN2011-ZH PDF) |
| 配用： | ECW1DB24BC0024-ND - ENCODER DIGITAL CONT 24 CPR ECW1JB24BC0024-ND - ENCODER DIGITAL CONT 24 CPR |
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Application Notes
Temperature Coef?cient of Resistance
The temperature coef?cient of resistance (TCR) is an
indication of the maximum change in total
resistance that may occur due to a change in ambient
operating temperature. This parameter is normally
speci?ed in parts per million per degree Celsius
(PPM/°C). Temperature coef?cient is dependent on
contact resistance variation (CRV). The rule of
thumb for selecting the wiper load is to use the ratio
of total resistance (RT) to wiper load (RL) of 1:100
or higher (see Figures 2 and 3.)
The following tables will guide you in selecting the
correct type of potentiometer for your application.
the type of material used to construct the resistive
element and the physical structure of the unit.
Potentiometers constructed with cermet, conductive
plastic or carbon elements typically have a higher
temperature coef?cient than those constructed with
wirewound elements by approximately twice the
value.
Wiper Load
The wiper load must always be speci?ed carefully, as
it has a great effect on the wiper output. Unless
otherwise speci?ed, Bourns assumes the resistance
wiper load to be at least 100 times the value of the
potentiometer per the industry standard. In
specifying the wiper load, keep in mind that if the
current load is too high, linearity will degrade. With
conductive plastic elements, excessive wiper load will
increase the negative effects of contact resistance and
Figure 3: Linearity Affected by Load
Figure 2: Error Due to Wiper Loading
28
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相关代理商/技术参数 |
参数描述 |
|---|---|
| H-381-14 | 制造商:ETC MOLEX-INACTIVE 功能描述:Cross Referenced to MOLEX - Part: MOL19193-0330 |
| H-381-38 | 制造商:ETC MOLEX-INACTIVE 功能描述:Cross Referenced to MOLEX - Part: MOL19193-0331 制造商:Molex 功能描述:Ring Tongue Terminal (1/0)AWG 48.77mm 21.34mm Electro-Tin Bag |
| H-38-14 | 功能描述:电位计工具及硬件 H-038 HARDWARE RoHS:否 制造商:Vishay/Spectrol 产品:Adapter Kit |
| H-38-15 | 功能描述:电位计工具及硬件 HARDWARE - NUT RoHS:否 制造商:Vishay/Spectrol 产品:Adapter Kit |
| H-381-56 | 制造商:ETC MOLEX-INACTIVE 功能描述:Cross Referenced to MOLEX - Part: MOL19193-0333 |
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