- 您現(xiàn)在的位置：買賣IC網 > PDF目錄357795 > ETD2G12 POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.036A (COIL), 12VDC (COIL), 432mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT PDF資料下載
參數(shù)資料
| 型號： | ETD2G12 |
| 元件分類： | 功率/信號繼電器 |
| 英文描述： | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.036A (COIL), 12VDC (COIL), 432mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT |
| 文件頁數(shù)： | 6/9頁 |
| 文件大?。?/td> | 1408K |
| 代理商： | ETD2G12 |
Application notes
N°007
SUPPRESSOR DEVICES FOR RELAY COILS
The inductive nature of relay coils allows them to create magnetic forces which are converted to mechanical movements to
operate contact systems. When voltage is applied to a coil, the resulting current generates a magnetic flux, creating
mechanical work. Upon deenergizing the coil, the collapasing magnetic field induces a reverse voltage (also known as back
EMF) which tends to maintain current flow in the coil. The induced voltage level mainly depends on the duration of the
deenergization. The faster the switch-off, the higher the induced voltage.
All coil suppression networks are based on a reduction of speed of current decay. This reduction may also slow down the
opening of contacts, adversly effecting contact life and reliability. Therefore, it is very important to have a clear understanding
of these phenomena when designing a coil suppression circuitry.
Typical coil characteristics
On the graph below, the upper record shows the contacts state. (High level NO contacts closed, low level NC contacts closed,
intermediate state contact transfer). The lower record shows the voltage across the coil when the current is switched off by
another relay contact.
The surge voltage is limited to -300V by the arc generated across contact poles. Discharge duration is about 200
mircoseconds after which the current change does not generate sufficient voltage. The voltage decreases to the point where
the contacts start to move, at this time, the voltage increases due to the energy contained in the NO contact springs. The
voltage decreases again during transfer, and increases once more when the magnetic circuit is closed on permanent magnet.
Operating times are as follows:
Time to start the movement 1.5ms
Total motion time 2.3ms
Transfer time 1.4ms
Contact State
Date of issue: 6/00
- 8 -
Page 1 of 4
相關PDF資料 |
PDF描述 |
|---|---|
| ETD2G06 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.067A (COIL), 6VDC (COIL), 402mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT |
| ETD2E28 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.019A (COIL), 28VDC (COIL), 532mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT |
| ETD2E12 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.036A (COIL), 12VDC (COIL), 432mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT |
| ETD2E06 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.067A (COIL), 6VDC (COIL), 402mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT |
| ETD2C28 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.019A (COIL), 28VDC (COIL), 532mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-RIGHT ANGLE MOUNT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ETD3.3SC300 | 功能描述:DC/DC轉換器 200-400V IN 3.3V RoHS:否 制造商:Murata 產品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| ETD3.3SC48 | 功能描述:DC/DC轉換器 36-72V IN 3.3V RoHS:否 制造商:Murata 產品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風格:SMD/SMT 封裝 / 箱體尺寸: |
| ETD30488CG | 功能描述:電氣外殼配件 NEMA12 WRG 10.2X3.2 RoHS:否 制造商:Hammond Manufacturing 產品:Rack Accessories 類型: 面板寬度: 面板高度: 外部寬度: 外部高度: 外部深度: 顏色:Black |
| ETD306012CG | 功能描述:電氣外殼配件 NEMA12 WRG 11.7X8.5 RoHS:否 制造商:Hammond Manufacturing 產品:Rack Accessories 類型: 面板寬度: 面板高度: 外部寬度: 外部高度: 外部深度: 顏色:Black |
| ETD34 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ETD34 |
發(fā)布緊急采購，3分鐘左右您將得到回復。