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參數資料
| 型號： | GP250720FHA26V |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | RELAY - LATCH 2 PDT, 2 AMP |
| 中文描述： | 繼電器-鎖存2秒，2安培 |
| 文件頁數： | 8/9頁 |
| 文件大小： | 314K |
| 代理商： | GP250720FHA26V |
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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相關代理商/技術參數 |
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| GP250AAHC | 制造商:GP BATTERIES 功能描述:BATTERY ((NS)) |
| GP250AAHC-0/AA | 制造商:GP Batteries 功能描述:Bulk |
| GP250AAHC-U2 | 功能描述:NiMH - 鎳氫電池 AA 1.2V 2500mAh High Capacity RoHS:否 制造商:FDK Batteries 電池大小: 輸出電壓:1.2 V 容量:1250 mAh 端接類型:Pressure Contacts 可再充電/不可再充電:Rechargeable |
| GP250AFH | 制造商:GP BATTERIES 功能描述:BATTERY AF 1.2V TAGGED 制造商:GP BATTERIES 功能描述:BATTERY, AF, 1.2V, TAGGED 制造商:GP BATTERIES 功能描述:BATTERY, AF, 1.2V, TAGGED; Battery Size Code:AF; Battery Capacity:2.5Ah; Battery Voltage:1.2V; Battery Technology:Nickel Metal Hydride; External Diameter:17mm; External Height:50mm; Weight:37g; Battery Terminals:Solder Tab; Body ;RoHS Compliant: NA 制造商:GP BATTERIES 功能描述:BATTERY, AF, 1.2V, TAGGED; Battery Size Code:AF; Battery Capacity:2.5Ah; Battery Voltage:1.2V; Battery Technology:Nickel Metal Hydride; External Diameter:17mm; External Height:50mm; Weight:37g; Battery Terminals:Solder Tab; SVHC:No ;RoHS Compliant: NA |
| GP250AFP | 制造商:Dantona Industries 功能描述:GP250AFH 1.2V 2500mAh 162 IN CASE |
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