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参数资料
| 型号： | XB4B |
| 元件分类： | 功率/信号继电器 |
| 英文描述： | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.096A (COIL), 12VDC (COIL), 1152mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT |
| 文件页数： | 3/16页 |
| 文件大小： | 1015K |
| 代理商： | XB4B |
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
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相关PDF资料 |
PDF描述 |
|---|---|
| XB4A | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.056A (COIL), 28VDC (COIL), 1568mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT |
| XB2V | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.3A (COIL), 6VDC (COIL), 1800mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| XB2R | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.096A (COIL), 12VDC (COIL), 1152mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| XB2N | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.056A (COIL), 28VDC (COIL), 1568mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| XB2M | POWER/SIGNAL RELAY, DPDT, MOMENTARY, 0.03A (COIL), 48VDC (COIL), 1440mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| XB4B2435D | 制造商:Omron Electronic Components LLC 功能描述:CONN FPC 24POS SOCKET .4MM SMD |
| XB4B-2435-D | 功能描述:FFC & FPC连接器 .4mm Pitch Board Socket 24 Pin RoHS:否 制造商:JAE Electronics 产品类型:Plugs 系列:HD 节距:0.5 mm 位置/触点数量:40 安装角: 安装风格:Cable 外壳材料:Plastic 触点材料:Copper Alloy 触点电镀:Gold 电压额定值:100 V per contact 电流额定值:0.24 A to 1 A |
| XB4B4035D | 制造商:Omron Electronic Components LLC 功能描述:CONN FPC 40POS SKT .4MM SMT |
| XB4B-4035-D | 功能描述:FFC & FPC连接器 .4mm Pitch Board Socket 40 Pin RoHS:否 制造商:JAE Electronics 产品类型:Plugs 系列:HD 节距:0.5 mm 位置/触点数量:40 安装角: 安装风格:Cable 外壳材料:Plastic 触点材料:Copper Alloy 触点电镀:Gold 电压额定值:100 V per contact 电流额定值:0.24 A to 1 A |
| XB4B-5035-D | 功能描述:FFC & FPC连接器 .4mm Pitch Board Socket 50 Pin RoHS:否 制造商:JAE Electronics 产品类型:Plugs 系列:HD 节距:0.5 mm 位置/触点数量:40 安装角: 安装风格:Cable 外壳材料:Plastic 触点材料:Copper Alloy 触点电镀:Gold 电压额定值:100 V per contact 电流额定值:0.24 A to 1 A |
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