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參數(shù)資料
| 型號(hào)： | STV9556 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 運(yùn)動(dòng)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)： | 13/24頁 |
| 文件大小： | 698K |
| 代理商： | STV9556 |
STV9556
13/24
Figure 16. Arcing protection network (one channel)
10.3
Arcing protection: layout and decoupling
Several layout precautions have to be considered to get the optimum arcing protection:
Sparkgap grounding
: when an arc occurs, the energy must flow through the CRT ground without
reaching the amplifier. This is obtained by connecting the sparkgap grounding (point B) to the CRT
ground (socket) via a wide/short trace. Conversely the point B must be connected to the amplifier
ground via a longer/narrower trace.
Grounding separation
: In order to set apart the amplifer ground and CRT ground, the R29/C29 net-
work (
Figure 16
) can be used.
Amplifier grounding
: The 3 grounds GNDS, GNDA and GNDP must be connected together as
close as possible to the device.
R11
R29(***)
1-10
110
/0.5W
C18
100nF
C24
4.7
μ
F/150V
C12(*)
100nF/250V
R19(**)
R10
110
/0.5W
L1
0.33
μ
H
D12
FDH400
F1
STV9556
V
DD
OUT
Spark gap
200V
(
*
): To be connected as close as possible to the device
(**): R19 must be mandatorily used
(***): Ground separation network
33-40
C29(***)
0.22
μ
F
CRT
GNDP
GNDS
GNDA
D13
FDH400
V
DD
A
B
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