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參數資料
| 型號： | Q67006-A9253 |
| 廠商： | SIEMENS AG |
| 英文描述： | SMART TWO CHANNEL LOW-SIDE SWITCH |
| 中文描述： | 智能雙通道低端開關 |
| 文件頁數： | 9/19頁 |
| 文件大小： | 138K |
| 代理商： | Q67006-A9253 |
TLE 4921-3U
Data Sheet
9
2000-07-01
Application Configurations
Two possible applications are shown in
Figure 7 and 8
(Toothed and Magnet Wheel).
The difference between two-wire and three-wire application is shown in
Figure 9
.
Gear Tooth Sensing
In the case of ferromagnetic toothed wheel application the IC has to be biased by the
south or north pole of a permanent magnet (e.g. SmCO
5
(Vacuumschmelze VX145) with
the dimensions 8 mm
×
5 mm
×
3 mm) which should cover both Hall probes.
The maximum air gap depends on
– the magnetic field strength (magnet used; pre-induction) and
– the toothed wheel that is used (dimensions, material, etc.; resulting differential field)
Figure 5
Sensor Spacing
Figure 6
Toothed Wheel Dimensions
a centered distance
of Hall probes
b Hall probes to
IC surface
L IC surface to
tooth wheel
= 2.5 mm
= 0.3 mm
a
b
b
L
a
N
S
AEA01259
d
T
AEA01260
Conversion DIN – ASA
m
= 25.4 mm/p
T
= 25.4 mm CP
DIN
d
z
m
T
diameter (mm)
number of teeth
module
m
=
d
/
z
(mm)
pitch
T
=
π ×
m
(mm)
ASA
p
PD
CP
diameter pitch
p
pitch diameter PD =
z
/
p
(inch)
circular pitch
=
z
/
d
(inch)
CP = 1 inch
× π
/
p
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