描述
SE07-18W
元件符號(hào)表示實(shí)際電路中的元件,它的形狀與實(shí)際的元件不一定相似,甚至完全不一樣。但是它一般都表示出了元件的特點(diǎn),而且引腳的數(shù)目都和實(shí)際元件保持一致。
連線表示的是實(shí)際電路中的導(dǎo)線,在原理圖中雖然是一根線,但在常用的印刷電路板中往往不是線而是各種形狀的銅箔塊,就像收音機(jī)原理圖中的許多連線在印刷電路板圖中并不一定都是線形的,也可以是一定形狀的銅膜。
結(jié)點(diǎn)表示幾個(gè)元件引腳或幾條導(dǎo)線之間相互的連接關(guān)系。所有和結(jié)點(diǎn)相連的元件引腳、導(dǎo)線,不論數(shù)目多少,都是導(dǎo)通的。
注釋在電路圖中是十分重要的,電路圖中所有的文字都可以歸入注釋—類。細(xì)看以上各圖就會(huì)發(fā)現(xiàn),在電路圖的各個(gè)地方都有注釋存在,它們被用來(lái)說(shuō)明元件的型號(hào)、名稱等等。
若不知電路的作用,可先分析電路的輸入和輸出信號(hào)之間的關(guān)系。如信號(hào)變化規(guī)律及它們之間的關(guān)系、相位問(wèn)題是同相位,或反相位。電路和組成形式,是放大電路,振蕩電路,脈沖電路,還是解調(diào)電路。電器修理、電路設(shè)計(jì)的工作人員都是要通過(guò)分析電路原理圖,了解電器的功能和工作原理,才能得心應(yīng)手開(kāi)展工作的。作為從事此項(xiàng)工作的技術(shù)人員,首先要有過(guò)硬的基本功,要能對(duì)有技術(shù)參數(shù)的電路原理圖進(jìn)行總體了解,能進(jìn)行劃分功能模塊,找出信號(hào)流向,確定元件作用。要學(xué)會(huì)維修電器設(shè)備和設(shè)計(jì)電路,就必須熟練掌握各單元電路的原理。會(huì)劃分功能塊,能按照不同的功能把整機(jī)電路的元件進(jìn)行分組,讓每個(gè)功能塊形成一個(gè)具體功能的元件組合,如基本放大電路,開(kāi)關(guān)電路,波形變換電路等。
產(chǎn)品承諾:
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢(shì)價(jià)格,大量現(xiàn)貨。
主營(yíng)DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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