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參數(shù)資料
| 型號(hào)： | EAD2C06 |
| 元件分類： | 功率/信號(hào)繼電器 |
| 英文描述： | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.067A (COIL), 6VDC (COIL), 402mW (COIL), 1A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| 文件頁數(shù)： | 7/9頁 |
| 文件大小： | 1408K |
| 代理商： | EAD2C06 |
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
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