WEBER 電壓隔離傳感器WBV414S01翊霈代理
發布(bu)日期(qi):2023-12-20
簡要描述:
電(dian)(dian)(dian)容(rong)器(qi)(qi),通常簡稱其容(rong)納電(dian)(dian)(dian)荷的本領為電(dian)(dian)(dian)容(rong),用(yong)字母C表(biao)示。定(ding)義(yi)(yi)1:電(dian)(dian)(dian)容(rong)器(qi)(qi),顧名(ming)(ming)思義(yi)(yi),是‘裝(zhuang)電(dian)(dian)(dian)的容(rong)器(qi)(qi)’,是一種容(rong)納電(dian)(dian)(dian)荷的器(qi)(qi)件。英文名(ming)(ming)稱:capacitor。電(dian)(dian)(dian)容(rong)器(qi)(qi)是電(dian)(dian)(dian)子設備中大量使用(yong)
的電(dian)子元(yuan)件之(zhi)一,廣泛應用于電(dian)路(lu)中的隔直通交,耦合,旁(pang)路(lu),濾波,調(diao)諧回(hui)路(lu), 能量轉(zhuan)換,控制(zhi)等方面(mian)。定義2:電(dian)容器,任(ren)何兩個彼此絕緣且相隔很近的導體(包括導線)間都(dou)構成一
個電(dian)(dian)(dian)(dian)容(rong)器(qi)。簡單的(de)電(dian)(dian)(dian)(dian)容(rong)器(qi)是由兩端(duan)的(de)極(ji)板(ban)和(he)中間的(de)絕緣(yuan)電(dian)(dian)(dian)(dian)介質(zhi)(包括空氣)構成的(de)。通電(dian)(dian)(dian)(dian)后,極(ji)板(ban)帶電(dian)(dian)(dian)(dian),形成電(dian)(dian)(dian)(dian)壓(ya)(電(dian)(dian)(dian)(dian)勢差),但是由于中間的(de)絕緣(yuan)物(wu)質(zhi),所以整(zheng)個電(dian)(dian)(dian)(dian)容(rong)器(qi)是不(bu)導(dao)電(dian)(dian)(dian)(dian)的(de)。不(bu)
過,這樣的(de)(de)情況(kuang)是在沒有超過電容(rong)器的(de)(de)臨界(jie)電壓(擊(ji)穿電壓)的(de)(de)前提條(tiao)件下的(de)(de)。我(wo)們知道,任何物(wu)質都是相(xiang)對絕緣的(de)(de),當物(wu)質兩(liang)端的(de)(de)電壓加大(da)到一定(ding)程(cheng)度(du)后,物(wu)質是都可以導電的(de)(de),我(wo)們稱
這個(ge)電(dian)(dian)(dian)(dian)(dian)壓(ya)叫(jiao)擊穿(chuan)電(dian)(dian)(dian)(dian)(dian)壓(ya)。電(dian)(dian)(dian)(dian)(dian)容(rong)也(ye)不例外,電(dian)(dian)(dian)(dian)(dian)容(rong)被擊穿(chuan)后,就不是(shi)絕(jue)緣(yuan)體了。當電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)接通電(dian)(dian)(dian)(dian)(dian)源(yuan)以后,在電(dian)(dian)(dian)(dian)(dian)場力(li)的作用下(xia),與(yu)電(dian)(dian)(dian)(dian)(dian)源(yuan)正極(ji)相(xiang)接電(dian)(dian)(dian)(dian)(dian)容(rong)器(qi)極(ji)板的 自由電(dian)(dian)(dian)(dian)(dian)子將(jiang)經過電(dian)(dian)(dian)(dian)(dian)源(yuan)移到與(yu)電(dian)(dian)(dian)(dian)(dian)源(yuan)負極(ji)相(xiang)接
的極(ji)板下, 正(zheng)極(ji)由(you)于失去負(fu)(fu)電(dian)(dian)(dian)荷而(er)帶(dai)(dai)正(zheng)電(dian)(dian)(dian), 負(fu)(fu) 極(ji)由(you)于獲得負(fu)(fu)電(dian)(dian)(dian)荷而(er)帶(dai)(dai)負(fu)(fu)電(dian)(dian)(dian),正(zheng),負(fu)(fu)極(ji)板所帶(dai)(dai)電(dian)(dian)(dian)荷大小相(xiang)等(deng),符號相(xiang)反.
電(dian)磁(ci)繼電(dian)器一(yi)般由鐵芯、線圈(quan)、銜鐵、觸點簧(huang)等組成(cheng)的(de)。只要在(zai)線圈(quan)兩端加上一(yi)定的(de)電(dian)壓,線圈(quan)中就會(hui)流過一(yi)定的(de)電(dian)流,從而(er)產生(sheng)電(dian)磁(ci)效應(ying),銜鐵就會(hui)在(zai)電(dian)磁(ci)力吸引(yin)的(de)作用下克服(fu)返(fan)回彈簧(huang)
的(de)(de)(de)拉力(li)吸向鐵芯,從而帶動銜(xian)鐵的(de)(de)(de)動觸(chu)點與(yu)靜(jing)觸(chu)點(常開觸(chu)點)吸合。當(dang)線圈斷電后,電磁的(de)(de)(de)吸力(li)也隨之消失,銜(xian)鐵就會在彈簧的(de)(de)(de)反作用(yong)力(li)返回原來的(de)(de)(de)位(wei)置,使(shi)動觸(chu)點與(yu)原來的(de)(de)(de)靜(jing)觸(chu)點(常
閉觸點)釋(shi)放(fang)。這樣(yang)(yang)吸合、釋(shi)放(fang),從(cong)而達到了在電(dian)路中(zhong)的(de)(de)(de)導通、切(qie)斷的(de)(de)(de)目的(de)(de)(de)。對于繼(ji)電(dian)器(qi)的(de)(de)(de)“常(chang)開(kai)、常(chang)閉”觸點,可以這樣(yang)(yang)來區分(fen):繼(ji)電(dian)器(qi)線圈未(wei)通電(dian)時處于斷開(kai)狀態(tai)的(de)(de)(de)靜觸點,稱(cheng)為“常(chang)
開(kai)觸點(dian)(dian)”;處(chu)于接(jie)通狀態的靜(jing)觸點(dian)(dian)稱為(wei)“常閉觸點(dian)(dian)”。繼電(dian)(dian)器一般有兩股電(dian)(dian)路(lu)(lu),為(wei)低(di)壓控制(zhi)電(dian)(dian)路(lu)(lu)和高(gao)壓工(gong)作電(dian)(dian)路(lu)(lu)。當線圈通電(dian)(dian)(電(dian)(dian)壓規格(ge)有ac380v、ac220v或dc220v、dc24v等(deng))時,銜鐵及(ji)
托板(ban)被鐵(tie)心吸引而瞬(shun)時下移,使瞬(shun)時動作(zuo)觸點接通或(huo)斷開。但是(shi)活塞(sai)桿(gan)和杠(gang)桿(gan)不(bu)能同時跟著銜鐵(tie)一起下落,因為活塞(sai)桿(gan)的上端連著氣(qi)室中(zhong)的橡皮膜(mo),當活塞(sai)桿(gan)在(zai)釋放彈簧(huang)的作(zuo)用(yong)下開始向(xiang)下
運(yun)動時,橡皮(pi)膜隨之向(xiang)下(xia)凹,上面空氣室(shi)的空氣變得稀(xi)薄而使活塞桿(gan)(gan)受到阻尼作用而緩慢下(xia)降。經過(guo)一(yi)定(ding)時間,活塞桿(gan)(gan)下(xia)降到一(yi)定(ding)位置,便通過(guo)杠(gang)桿(gan)(gan)推動延時觸點(dian)動作,使動斷觸點(dian)斷開(kai),
動合觸點閉合。從線(xian)圈通電到延時(shi)(shi)觸點完成動作,這段(duan)時(shi)(shi)間就是繼電器的(de)(de)(de)延時(shi)(shi)時(shi)(shi)間。延時(shi)(shi)時(shi)(shi)間的(de)(de)(de)長(chang)短可以用螺釘調節(jie)空氣室進(jin)氣孔的(de)(de)(de)大小來改變。
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WEBER 電壓隔離傳感器 WBV414S01
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WEBER 電壓隔離傳感器WBV414S01翊霈代理
WEBER 電壓隔離傳感器WBV414S01翊霈代理