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參數(shù)資料
| 型號(hào)： | EFD2P28 |
| 元件分類： | 功率/信號(hào)繼電器 |
| 英文描述： | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.019A (COIL), 28VDC (COIL), 532mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 1408K |
| 代理商： | EFD2P28 |
Types of suppressors:
Passive devices.
The resistor capacitor circuit
It eliminates the power dissipation problem, as well as fast voltage rises. With a proper match between coil and resistor,
approximate capacitance value can be calculated from:
C = 0.02xT/R, where
T = operating time in milliseconds
R = coil resistance in kiloOhms
C = capacitance in microFarads
The series resistor must be between 0.5 and 1 times the coil resistance. Special consideration must be taken for the
capacitor inrush current in the case of a low resistance coil.
The record shown opposite is performed on the same relay as above. The operation time becomes:
- time to start the movement 2.3ms
- transfer time 1.2ms
The major difficulty comes from the capacitor volume. In our example of a relay with a 290
coil and time delay of 8 ms, a
capacitance value of C=0.5 uF is found. This non polarized capacitor, with a voltage of 63V minimum, has a volume of about
1cm
3
. For 150V, this volume becomes 1.5 cm
3
.
Date of issue: 6/00
- 9 -
Page 2 of 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EFD2P12 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.036A (COIL), 12VDC (COIL), 432mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| EFD2P06 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.067A (COIL), 6VDC (COIL), 402mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| EFD2E28 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.019A (COIL), 28VDC (COIL), 532mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| EFD2E12 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.036A (COIL), 12VDC (COIL), 432mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| EFD2E06 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.067A (COIL), 6VDC (COIL), 402mW (COIL), 1A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EFD30 | 制造商:Datatronic Distribution Inc 功能描述: |
| EFD30/15/9-3C90 | 制造商:Yageo / Ferroxcube 功能描述: |
| EFD30/15/9-3C90-A250 | 制造商:Yageo / Ferroxcube 功能描述: |
| EFD30/15/9-3C94-A160 | 制造商:Yageo / Ferroxcube 功能描述: |
| EFD30/15/9-3C96 | 功能描述:FERRITE CORE 制造商:ferroxcube 系列:- 零件狀態(tài):在售 內(nèi)核類型:EFD 容差:- 間隙:- 材料:3C96 表面:無涂層 供應(yīng)商器件封裝:EFD 30 x 15 x 9 高度:15.00mm 長度:30.00mm 寬度:9.10mm 直徑:- 標(biāo)準(zhǔn)包裝:480 |
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