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参数资料
型号： H-38-11
厂商： Bourns Inc.
文件页数： 28/73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
Application Notes
Potentiometers
Performance Characteristics
rating indicates to the circuit designer how much
power may be safely dissipated without harm to the
device.
The following section discusses various performance
characteristics to be considered when selecting a
potentiometer along with typical applications and
basic circuit con?gurations.
Power Rating
Power rating is the maximum heat that can be
dissipated by a potentiometer under speci?ed
conditions with certain performance requirements.
Heat (or power) dissipation is the result of current
passing through a resistance. The useful life of a
given potentiometer is directly related to the
maximum temperature allowed in the interior of the
unit. Above a certain internal temperature, insulating
materials begin to degrade. A maximum power
Taper
A taper is de?ned as the output curve of resistance,
measured between one end of the element and the
wiper. It is expressed in percent of total resistance
versus percent of effective rotation. Sensors and
Controls precision wirewound products and
precision single-turn potentiometers are available in
linear taper only. Linear taper is the percent of
effective electrical clockwise rotation equal to the
percent of voltage ratio output, creating a linear
output. Audio taper produces a change in output on
a logarithmic scale giving the human ear the
perception of sound intensity increasing in a linear
mode. All other Bourns? potentiometers are
available in a variety of standard tapers, including
audio and reverse audio. Custom tapers are available;
Models
39
50 Series
80 Series (81, 82, 85, 86)
1
B
A, H, B, E
A, H, B, E
Taper Codes
2 3
D G
C, D, S F, G, T
C, D, S F, G, T
4*
consult the factory for complete details and
minimum order quantities. Table 1 provides an easy
reference for taper codes on all Bourns? panel
control models. Figure 1 shows the most frequently
requested tapers ranked by most popular:
80 Series (83, 84)
J, K
90 Series
3310
3851, 3852, 3856
3862
PCW
PDA17
PDB12
PDB18
PTV09
PTV111/PTT111
PTV142
PTD90/PTR90
PDV
PTA
PTB
A, H, B, E
Linear only
A, H, B, E
A, H, B, E
B
B
B
B
B
B
B
B
B
B
B
C, D, S
C, D
C, D
D
A
A
A
A
A
A
A
A
A
A
F, G, T
F, G
F, G
G
1 = linear taper
2 = audio or log taper
3 = reverse audio or reverse log taper
4 = modi?ed linear or “S” taper
4
3
Notes:
? Please refer to the datasheets for more information on taper codes
? *Custom parts only
? All precision potentiometer models are available in linear only.
1
2
? “S” taper and other tapers are available by special order.
Table 1: Taper Codes by Model
Figure 1: Popular Tapers
27
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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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