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參數資料
| 型號： | AMC8500 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | TWO PHASE VARIABLE SPEED FAN MOTOR CONTROLLER |
| 中文描述： | 兩相流變速風扇電機控制器 |
| 文件頁數： | 20/27頁 |
| 文件大小： | 648K |
| 代理商： | AMC8500 |
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Preliminary Specification
aMC8500
P
P
- 20 -
Andigilog, Inc. 2006
www.andigilog.com
August 2006 - 70A04018
Application Requirements
Closest Standard 1.0% Resistor Values
Thermistor
Linearization
Threshold
Hysteresis
Min Speed
Speed Transition
Temperature °C
Minimum
Speed
Setting
R1
R2
R3
R4
R5
R6
R7
Min to Max
Max to Min
%on
30
28
35
10000
8060
1020
1000
158000
1070
1130
35
30
35
10000
7500
1020
1100
66500
1070
1130
38
35
0
10000
6340
1020
1070
113000
-
-
40
38
30
10000
5760
1050
1100
180000
1070
1270
45
40
30
10000
4990
1050
1130
73200
1070
1270
Thermostatic control can be accomplished by configuring the Op Amp as a non-inverting voltage comparator. The above table shows
five different application examples with the calculated resistor values. In applications 1, 2, 4, and 5, the motor will switch from the
programmed minimum setting to maximum speed as the sensor temperature rises above the required transition temperature. A
controlled amount of positive feedback shifts the transition temperatures to provide thermal hysteresis as the sensor cools. In the third
application requirement, the motor speed switches between zero and full speed. In this case the minimum speed set input is not
required and the comparator must be disabled by connecting Pin 6 to Pin 14. Note that the total Reference load current must exceed 2.0
mA in order to disable the automatic power down feature.
13
7
6
Fault Timer
Power Down
Kick Start
Reference
Hall Amplifier
Non-Overlap
Commutation
H
Current Limit
Comp
Motor
Drives
12 V
Op Amp
Oscillator
R
Min Speed
Comp
PWM Comp
Digital
Detector
Thermal
Shutdown
Under Voltage
Lockout
Current
Limit
Latch
R
Q
S
16
1
12
15
14
10
9
8
5
11
PWM
Logic
10
μ
A
3
4
R5
R4
10 k
@ 25°C
β
= 3694
R2
R1
R6
R7
T
R3
N
S
M
S
N
H
H
2
10 nF
Figure 36- Thermistor Sensing Thermostatic Temperature Regulator
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