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参数资料
| 型号： | TDA7274 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | BRUSH DC MOTOR CONTROLLER, 0.7 A, PDIP8 |
| 封装： | MINI, DIP-8 |
| 文件页数： | 8/10页 |
| 文件大小： | 970K |
| 代理商： | TDA7274 |
Figure 15 : Speed Variations vs.
Ambient Temperature.
APPLICATION INFORMATION
Figure 16.
IM = Motor current at rated speed
RM = Motor resistance
Eg = Back electromotive force
VM = IM .RM + Eg
Eg
= RT Id + IM
RT
K
RM
+ Vref
1
+
RB
RS
+
RT
RS
(1 +
1
K
)
RS has to be adjusted so that the applied voltage
VM is suitable for a given motor, the speed is then
linearly adjustable varing RB.
The value of RT is calculated so that
RT (max.) < K (min.)
. RM (min.)
If RT (max.) > K
RM, instability may occur.
The values of C1 (4.7
F typ.) and C2 (1 F typ.)
depend on the type of motor used. C1 adjusts
WOW and flutter of the system. C2 suppresses
motor spikes.
TDA7274
7/10
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相关代理商/技术参数 |
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|---|---|
| TDA7275A | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:MOTOR SPEED REGULATOR |
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| TDA7284D | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:RECORD/PLAYBACK CIRCUIT WITH ALC |
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