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參數(shù)資料
| 型號(hào)： | CBF1908-10RKI |
| 廠商： | TT Electronics / Welwyn |
| 英文描述： | Tubular Vitreous Enamelled Wirewound Resistors |
| 中文描述： | 管狀玻璃搪瓷繞線電阻 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 338K |
| 代理商： | CBF1908-10RKI |
Tubular Vitreous Enamelled
Wirewound Resistors
1600/1900 Series
Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
124
Issue E · 10.05
Welwyn Components
Table 3
Adjustable Resistors
(see Figure 9)
Adjustable resistors use the same basic construction as fixed
resistors already described, and have a window in the vitreous
enamel through which contact is made to the resistive
element by a sliding contact band. The band is fitted with a
clamping screw and nut to retain it firmly in position.
The adjustable winding style has a maximum permissible hot
spot temperature of 300°C and the maximum dissipation, for
an ambient temperature of 20°C, is specified in Table 4. The
partial open winding necessitates a reduced maximum
resistance, when compared with fixed resistors, and the
resistance range is also defined in Table 4.
More than one adjusting band can be fitted, up to the
maximum number specified in Table 3.
Adjustable resistors are available in termination styles B, 4B,
AP, C, CB and CP, in sizes 1602 to 1609 inclusive and 1906
and 1908 denoted by prefix ‘V’.
Manufactured Values
E24 preferred
Standard Selection Tolerance ±10%
All other details of the electrical and environmental
performance of adjustable resistors are the same as for
fixed resistors.
Max. dissipation in
20°C ambient (watts)
Resistance range (ohms)
Type
Min. for
styles VC,
VCP
Min. for
all other
styles
Max. for
all styles
200°C
hot spot
300°C
hot spot
1602
8
15.5
4
3
1.6k
1906
9.5
19
4
3
2.5k
1603
11
22
6
6
3.0k
1604
16
31
8
8
5.3k
1605
21
41
6
6
4.5k
1908
24
47
11
10
7.5k
1607
34
66
11
9
8.1k
1606
41
80
14
13
13.2k
1608
52
101
17
16
15.4k
1609
74
145
25
24
25.5k
Tube
size
A mm
max.
B mm
max.
Hole C
dia. mm
Max. no of
adjusting
bands
1602
1603
20
27
3.2
1
1906
1604
1605
20
27
3.2
3
1908
25
32
3.7
2
1606
25
32
3.7
4
1607
30
38
3.7
2
1608
30
38
3.7
3
1609
30
38
3.7
5
Table 4
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