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參數(shù)資料
| 型號： | 204GT-1 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | THERMOPILE TYPE INFRARED SENSOR |
| 中文描述： | 熱電型紅外傳感器 |
| 文件頁數(shù)： | 21/44頁 |
| 文件大?。?/td> | 669K |
| 代理商： | 204GT-1 |
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21
POWER
THERMISTOR
The POWER THERMISTOR is a device for
suppressing inrush current to an electric
circuit. Circuits including electric bulbs or
capacitors induce a inrush current more
than 100 times the normal current when the
circuit switch is turned on. The POWER
THERMISTOR in the circuits protects
electric equipments from being damaged
by limiting the inrush current.
MARK is a NEW POWER THERMISTOR
featuring smaller size and larger energy
capacity to meet severe requirements in
inrush current suppression.
There is the tendency of miniaturization in
low power switching power supply, and
MARK is effectively applicable for the
needs, though the comparatively larger
sized fixed resistors (ceramic coat) are
used now.
Application
The power thermistor will suppress inrush current
which is caused by a capacitor, filament for a bulb,
inverter for fluorescent lamp, a heater and etc., also
will control fan motor speed of cooler for electric
circuit.
Especially MARK was developed to use for power
supply of TV, VCR instead of cement resistor.
How to use the power thermistor
Accordingly, suitable thermistors are 6D-22, 5D-18
and 8D-18, and if we consider in the points of small
time constant which means a small size and large
effect for suppressive current which means large
rated zero-power resistance, 8D-18 is the most
suitable one.
Use the following circuit in the power supply for 100V
and 200V.
The most suitable power thermistor for the above
circuit is required to fulfill the following terms and
conditions.
1. The permissible current at ambient temperature of
55 C should be over 2A.
2. The thermistor resistance for suppressive current
which becomes below 30A should be over 4.2
ohm from the under-mentioned formula.
t
SW
V
E
I
O
C
L
Input voltage
:
AC 100V
Steady state current
:
2A
Capacitor
:
2000 F
Ambient temperature
:
Max.55 C
Suppressive current
:
Max.30A at 25 C
10%
SW
1
SW
2
C
2
C
1
V
E
L
2 V
E
1.1
R
C
R
25
30
R
C
:
Internal resistance value in the circuit is 1 ohm
(100V/100A)
R
25
:
Rated zero-power resistance at 25 C
3. Max. capacitance shall be over 2000 F at AC 100V.
SW
2
: ON (200V), OFF (100V)
t
t
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 204GT-2 | 功能描述:熱敏電阻 - NTC 200kohm 3% RoHS:否 制造商:EPCOS 電阻:10 kOhms 功率額定值:150 mW 容差:2 % 端接類型:Radial 系列:B57703M 工作溫度范圍:- 55 C to + 125 C |
| 204GT-A-L | 制造商:Everlight Electronics Co 功能描述: |
| 204HBSP | 制造商:Marathon Special Products 功能描述: |
| 204HC3102K2EM8 | 功能描述:0.2μF Film Capacitor 1000V (1kV) Polypropylene (PP) Nonstandard 2.205" L x 1.189" W (56.00mm x 30.20mm) 制造商:illinois capacitor 系列:HC3 包裝:散裝 零件狀態(tài):新產(chǎn)品 電容:0.2μF 容差:±10% 額定電壓 - AC:1000V（1kV） 額定電壓 - DC:- 介電材料:聚丙烯（PP） ESR（等效串聯(lián)電阻）:1.2 毫歐 工作溫度:-40°C ~ 85°C 安裝類型:底座安裝 封裝/外殼:非標準 大小/尺寸:2.205" 長 x 1.189" 寬（56.00mm x 30.20mm） 高度 - 安裝（最大值）:2.618"（66.50mm） 端接:有螺紋 引線間距:- 應用:傳導冷卻，高脈沖，DV/DT 特性:- 標準包裝:5 |
| 204HC3102K4TM6 | 功能描述:0.2μF Film Capacitor 1000V (1kV) Polypropylene (PP) Nonstandard 2.362" L x 2.362" W (60.00mm x 60.00mm) 制造商:illinois capacitor 系列:HC3 包裝:散裝 零件狀態(tài):新產(chǎn)品 電容:0.2μF 容差:±10% 額定電壓 - AC:1000V（1kV） 額定電壓 - DC:- 介電材料:聚丙烯（PP） ESR（等效串聯(lián)電阻）:1.2 毫歐 工作溫度:-40°C ~ 85°C 安裝類型:底座安裝 封裝/外殼:非標準 大小/尺寸:2.362" 長 x 2.362" 寬（60.00mm x 60.00mm） 高度 - 安裝（最大值）:1.189"（30.20mm） 端接:有螺紋 引線間距:- 應用:傳導冷卻，高脈沖，DV/DT 特性:- 標準包裝:5 |
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