- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄48084 > YA1R POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.12A (COIL), 12VDC (COIL), 1440mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT PDF資料下載
參數(shù)資料
| 型號(hào)： | YA1R |
| 元件分類： | 功率/信號(hào)繼電器 |
| 英文描述： | POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.12A (COIL), 12VDC (COIL), 1440mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 3319K |
| 代理商： | YA1R |
Application notes
N°007
SUPPRESSOR DEVICES FOR RELAY COILS
The inductive nature of relay coils allows them to create magnetic forces which are converted to mechanical movements to
operate contact systems. When voltage is applied to a coil, the resulting current generates a magnetic flux, creating
mechanical work. Upon deenergizing the coil, the collapasing magnetic field induces a reverse voltage (also known as back
EMF) which tends to maintain current flow in the coil. The induced voltage level mainly depends on the duration of the
deenergization. The faster the switch-off, the higher the induced voltage.
All coil suppression networks are based on a reduction of speed of current decay. This reduction may also slow down the
opening of contacts, adversly effecting contact life and reliability. Therefore, it is very important to have a clear understanding
of these phenomena when designing a coil suppression circuitry.
Typical coil characteristics
On the graph below, the upper record shows the contacts state. (High level NO contacts closed, low level NC contacts closed,
intermediate state contact transfer). The lower record shows the voltage across the coil when the current is switched off by
another relay contact.
The surge voltage is limited to -300V by the arc generated across contact poles. Discharge duration is about 200
mircoseconds after which the current change does not generate sufficient voltage. The voltage decreases to the point where
the contacts start to move, at this time, the voltage increases due to the energy contained in the NO contact springs. The
voltage decreases again during transfer, and increases once more when the magnetic circuit is closed on permanent magnet.
Operating times are as follows:
Time to start the movement 1.5ms
Total motion time 2.3ms
Transfer time 1.4ms
Contact State
Date of issue: 6/00
- 8 -
Page 1 of 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| YA1V | POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.24A (COIL), 6VDC (COIL), 1440mW (COIL), 5A (CONTACT), 28VDC (CONTACT), SOCKET MOUNT |
| YA2B | POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.12A (COIL), 12VDC (COIL), 1440mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| YA2C | POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.24A (COIL), 6VDC (COIL), 1440mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| YA2M | POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.038A (COIL), 48VDC (COIL), 1824mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
| YA2N | POWER/SIGNAL RELAY, 4PDT, MOMENTARY, 0.07A (COIL), 28VDC (COIL), 1960mW (COIL), 5A (CONTACT), 28VDC (CONTACT), PANEL MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| YA-1R2416-A42 | 功能描述:基本/快動(dòng)開關(guān) BASIC SW SPNO 20A 480VAC 250VDC RoHS:否 制造商:Omron Electronics 觸點(diǎn)形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級(jí):IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
| YA-1R5435242-A2 | 功能描述:基本/快動(dòng)開關(guān) LARGE BASICS RoHS:否 制造商:Omron Electronics 觸點(diǎn)形式:SPDT 執(zhí)行器:Lever 電流額定值:5 A 電壓額定值 AC:250 V 電壓額定值 DC:30 V 功率額定值: 工作力:120 g IP 等級(jí):IP 67 NEMA 額定值: 端接類型:Wire 安裝:Panel |
| YA-2 | 功能描述:PNEUMATIC CRIMP TOOl RoHS:否 類別:工具 >> 壓接器，施用器，壓力機(jī) 系列:- 產(chǎn)品培訓(xùn)模塊:Board-to-Wire Connectors 標(biāo)準(zhǔn)包裝:1 系列:DF11 工具類型:臺(tái)式壓機(jī)，施用器 適用于相關(guān)產(chǎn)品:矩形觸點(diǎn)，24-28 AWG 特點(diǎn):- 配用:H1505TR-ND - CONN SOCKET 24-28AWG CRIMP GOLDH1504TR-ND - CONN SOCKET 24-28AWG CRIMP TIN 相關(guān)產(chǎn)品:AP105-DF11-2428S(64)-ND - TOOL APPLICATOR DF11 ACCESSORIESAP105-DF11-2428S(63)-ND - TOOL APPLICATOR DF11 ACCESSORIESAP105-DF11-2428S(62)-ND - TOOL APPLICATOR DF11 ACCESSORIESAP105-DF11-2428S(61)-ND - TOOL APPLICATOR DF11 ACCESSORIESCM-105 WITH TRANSFORMER-ND - TOOL AUTO CRIMPING MACHINE 其它名稱:*AP105-DF11-2428SQ1139807AQ949366 |
| YA252N | 制造商:Burndy 功能描述:MILLIPAC |
| YA25-2N | 制造商:BURNDY (TERMINALS) 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。