西瑪可控硅晶閘管R0717LS14H R0717LS16H
可控硅的工作原理：
1、雙向可控硅：雙向可控硅是一種硅bai可控整流器件，也稱(chēng)作雙向晶閘管。這種器件在電路中能夠?qū)崿F(xiàn)交流電的無(wú)觸點(diǎn)控制，以小電流控制大電流，具有無(wú)火花、動(dòng)作快、壽命長(zhǎng)、可靠性高以及簡(jiǎn)化電路結(jié)構(gòu)等優(yōu)點(diǎn)。
2、雙向可控硅除了其中一個(gè)電極G仍叫做控制極外，另外兩個(gè)電極通常卻不再叫做陽(yáng)極和陰極，而統(tǒng)稱(chēng)為主電極Tl和T2。它的符號(hào)也和普通可控硅不同，是把兩個(gè)可控硅反接在一起畫(huà)成的，它的型號(hào)“3CTS”或“KS”表示。
3、用“TRIAC”來(lái)表示的。雙向可控硅的規(guī)格、型號(hào)、外形以及電極引腳排列依生產(chǎn)廠(chǎng)家不同而有所不同，但其電極引腳多數(shù)是按T1、T2、G的顧序從左至右排列(觀(guān)察時(shí)，電極引腳向下，面對(duì)標(biāo)有字符的一面)。市場(chǎng)上常見(jiàn)的幾種塑封外形結(jié)構(gòu)雙向可控硅的外形及電極引腳排列就可以工作。
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