DVB CDTV410 數碼衛星電視接收機(Digital Satellite Receiver)機內的 4片 PCB板,其中 1片是電源供應板(Power Supply Board),開關式(Switching Power Supply Board)設計,電源供應板(Power Supply Board)尺寸為 125mm × 95mm × 1.mm,單面 94V-0 PCB 板(Single Side PCB),PCB 板重量是 114g,PCB 板編號是 SD2004-8481E9,生產廠商不詳,生產時間應該是 2004年。
DVB CDTV410 數碼衛星電視接收機(Digital Satellite Receiver)電源供應板(Power Supply Board) |
DVB CDTV410 數碼衛星電視接收機(Digital Satellite Receiver)機內的電源供應板(Power Supply Board)是開關式(Switching Power Supply Board)設計,整片電源供應板有 5枚 IC, LM317 TO-220 封裝的 Adjustable three-terminal positive-voltage regulator,不知名的 Optical Coupler,KA431AZ TO-92封裝的Programmable Shunt Regulator,78L09 TO-92封裝的 +9V 3-Terminal positive voltage regulator。還有1枚 TO-220 封裝的ACE CE86030L(Dual N-Channel Enhancement Mode Field Effect Transistor with ESD Protection)。
DVB CDTV410 數碼衛星電視接收機(Digital Satellite Receiver)電源供應板(Power Supply Board)的正面 |
DVB CDTV410 數碼衛星電視接收機(Digital Satellite Receiver)電源供應板(Power Supply Board)的背面 |
產品電源供應 PCB 板主要零件(BOM):
Type
|
Brand
|
P/N
|
Packaging
|
U1 - Adjustable
three-terminal positive-voltage regulator
|
LM317
|
TO-220
|
|
U2 – Optical
Coupler
|
|||
U3 - Programmable
Shunt Regulator
|
KA431AZ
|
TO-92
|
|
U4 - 3-Terminal
positive voltage regulator 9V
|
78L09
|
TO-92
|
DVB CDTV410 數碼衛星電視接收機(Digital Satellite Receiver)電源供應板(Power Supply Board)的輸出 |
Type
|
Output
|
Pin 1
|
3.3V
|
Pin 2
|
H/V
|
Pin 3
|
13/18
|
Pin 4
|
GND
|
Pin 5
|
3V3
|
Pin 6
|
3V3
|
Pin 7
|
GND
|
Pin 8
|
5V
|
Pin 9
|
12VON/OFF
|
2019年 9月 2日 天氣報告
氣溫:28.0度 @ 21:02
相對濕度:百分之 81%
天氣:一號熱帶氣旋警告信號現正生效
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