- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄22790 > 065FD2C12 POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.017A (COIL), 12VDC (COIL), 204mW (COIL), 0.5A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT PDF資料下載
參數(shù)資料
| 型號： | 065FD2C12 |
| 元件分類： | 功率/信號繼電器 |
| 英文描述： | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.017A (COIL), 12VDC (COIL), 204mW (COIL), 0.5A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| 文件頁數(shù)： | 8/9頁 |
| 文件大小： | 630K |
| 代理商： | 065FD2C12 |
The bifilar coil
The principle is to wind on the magnetic circuit of the main coil a second coil shorted on itself. By a proper adaptation of the
internal resistance of this second coil it is possible to find an acceptable equilibrium between surge voltage and reduction of
the opening speed. To be efficient at fast voltage changes, the coupling of two coils must be perfect. This implies embedded
windings. The volume occupied by the second coil reduces the efficiency of the main coil and results in higher coil power
consumption. This method cannot be applied efficiently to products not specifically designed for this purpose.
The resistor (parallel with the coil)
For efficient action, the resistor must be of the same order of magnitude as the coil resistance. A resistor 1.5 times the coil
resistance will limit the surge to 1.5 times the supply voltage. Release time and opening speed are moderately affected. The
major problem is the extra power dissipated.
Semi-conductor devices
The diode
It is the most simple method to totally suppress the surge voltage. It has the major disadvantage of the higher reduction of
contact opening speed. This is due to the total recycling, through the diode, of the energy contained in the coil itself. The
following measurement is performed once again on the same relay. Operation times are given by the upper curve:
- time to start the movement 14ms
- transfer time 5ms
These times are multiplied by a coefficient from 4 to 8.
The lower curve shows the coil current. The increase prior to NO contact opening indicates that the contact spring dissipates
its energy. At the opening time the current becomes constant as a result of practically zero opening speed.
Due to this kind of behavior, this type of suppression must be avoided for power relays. For small relays which have to switch
low currents of less than 0.2 A, degradation of life is not that significant and the method may be acceptable.
Date of issue: 6/00
- 10 -
Page 3 of 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 065FD2C26 | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.009A (COIL), 26.5VDC (COIL), 238.5mW (COIL), 0.5A (CONTACT), 28VDC (CONTACT), THROUGH HOLE-STRAIGHT MOUNT |
| 0272230389 | VIBRATIONSSENSOR ELEKTRONISCHES MODUL |
| 065TSPDTA | SLIDE SWITCH, SPDT, LATCHED, 1A, 24VDC, THROUGH HOLE-STRAIGHT |
| 0273003203 | DRUCKSENSOR PIEZO RESITIV |
| 0273003204 | DRUCKSENSOR PIEZO RESITIV |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 065FD2C26 | 制造商:Leach International Corporation 功能描述:EM RLY DPDT 0.5A 26VDC 3.1KOHM TH - Bulk |
| 065FD2C26-52 | 制造商:Leach International Corporation 功能描述:IAW 6707411 REV C - Bulk |
| 065FI2C12 | 制造商:Leach International Corporation 功能描述:EM RLY DPDT 0.5A 12VDC 375OHM TH - Bulk |
| 065FI2C24-52 | 制造商:Leach International Corporation 功能描述:IAW 6707412 REV C - Bulk |
| 065SDPDT | 制造商:CTS 制造商全稱:CTS Corporation 功能描述:Miniature Slide Switches |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。