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參數(shù)資料
| 型號： | STV9556 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 7.5 NS TRIPLE-CHANNEL HIGH VOLTAGE VIDEO AMPLIFIER |
| 中文描述： | 7.5納秒三通道視頻放大器高壓 |
| 文件頁數(shù)： | 17/24頁 |
| 文件大?。?/td> | 698K |
| 代理商： | STV9556 |
STV9556
17/24
10.9
Stand-by mode, spot suppression
The usual way to set a monitor in stand-by mode is to switch-off the Vcc (12V).
The STV9556 has an extremely low power consumption (I
DDS
= 60μA when V
CC
<1.5V) in stand-by mode
and the outputs are set to low level (white picture).
To avoid the display of a spot effect during the switch-off phase, it is necessary to adjust the G1 circuitry
(Resistors Rx and Cx, see
Figure 19
) to pull the G1 voltage to low value for a long enough period of time.
Figure 19. Stand-by mode, spot effect
Rx
Cx
Typical G1 generator circuitry
Case #2: High Rx.Cx
No spot effect
Case #1: Low Rx.Cx
A spot might appear during
the switch-off phase
G1
EHT
(27kV)
Cathode
G1
R1
-120V
-30V
0V
-30V
-120V
+80V
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