【正文】
choose a simple, is choose to be happy. The plex world like a Significance of pride. Hope is the ornate palace, outside people admiring the magnificent, living in the deep knowledge of living it to pay the price. Simple world as a simple log cabin outside ridiculed shabby, the heart is willing to go live to know the joy. Suffering and joy is their own choice. 22, learn how to use a single powerful heart, let the past be the past, 武漢萊斯特電子 34 let the future e. Life is really the end of the end of an eagle is flying wings, life is constantly pursuit. Don39。s mouth, because words will reduce its 武漢萊斯特電子 31 importance。 not to have conquered, but to have fought well. 2, the plain is the background of life. Live a plain life, give up on themselves is not a coward, but the wise answers。分別采用扭子開關(guān)選擇,撥碼開關(guān)設(shè)置等方式自由配置計(jì)數(shù)器,輸出端用獨(dú)立插孔引出,通過導(dǎo)線與其他模塊連接實(shí)現(xiàn)一定的功能。 JK 觸發(fā)器 說明: JK 觸發(fā)器是數(shù)字電路觸發(fā)器中的一種電路單元。 說明: 該模塊通過撥碼開關(guān)、扭子開關(guān)實(shí)現(xiàn)任意兩個(gè)門電路組成的基本復(fù)合邏輯門電路。 ( 4)將制作、調(diào)試和維修結(jié)果填入下表中。當(dāng)達(dá)到峰點(diǎn)電壓時(shí), e— b1 間導(dǎo)通,電容上電壓經(jīng) e— b1 向電阻 R3放電。另外一個(gè)是 b b2 間的分壓比,其大小由管內(nèi)工藝結(jié)構(gòu)決定,一般為 ~ 。 實(shí)驗(yàn)內(nèi)容及步驟 測(cè)量場(chǎng)效應(yīng)管的 Rds 電阻 武漢萊斯特電子 11 ① 結(jié)型場(chǎng)效應(yīng)管的輸出特性曲線如下圖 測(cè)量 Rds的實(shí)驗(yàn)參考電路如下圖所示 ,圖中 Vi 為 1KHZ 的交流電壓 ,VCC 為直流電源 ,考慮到 ds 間的直流回路。在低頻電路中,共射、共集電路比共基電路應(yīng)用更為廣泛。同理,為保證三極管實(shí)現(xiàn)放大作用,則必須滿足 UC UB UE。 三端可調(diào)式集成式穩(wěn)壓電源 模塊組成: 通過 LM317 和 LM337 三端可調(diào)式集成塊實(shí)現(xiàn)電源電壓輸出范圍 在12V 到 +12V 直流電壓輸出。 我公司多年以來在職業(yè)教育領(lǐng)域特別是實(shí)驗(yàn)實(shí)訓(xùn)方面,有廣泛的了解和深入的研究。通過撥碼開關(guān)來 設(shè)置開路故障,對(duì)濾波和整流橋的輸出進(jìn)行短路設(shè)置。 UBB通過 Rb 給發(fā)射結(jié)提供正向偏置電壓( UB UE) ,使之形成發(fā)射電流 IE 和基極電流IB ; UCC 通過 RC 給集電結(jié)提供反向偏置電壓( UC UB) ,使之形成集電極電流 IC 。 實(shí)驗(yàn)要求 了解放大器直流通路與交流通路; 會(huì)使用萬用表調(diào)試三極管的靜態(tài)工作點(diǎn) 了解溫度對(duì)放大器靜態(tài)工作點(diǎn)的影響; 了解分壓式偏置放大器的工作原理,會(huì)調(diào)整靜態(tài)工作點(diǎn)。 實(shí)驗(yàn)電路和原理 場(chǎng)效應(yīng)管放大電路如圖 1所示。利用單結(jié)晶體管的負(fù)阻特性和 RC 充放電電路,可制作脈沖振蕩器。 2.電路調(diào)光原理 圖一中, VT、 R R R RP、 C 組成單結(jié)晶體管張弛振蕩器。這是電位器中心抽頭接錯(cuò)位置所致。在高頻或者射頻中,諧振放大器一般應(yīng)用于小信號(hào)放大。它有兩個(gè)輸入端 R、 S和兩個(gè)輸出端 Q、Q非。時(shí)鐘脈沖可以使用模塊自帶的按鍵產(chǎn)生,也可以通過外部模塊產(chǎn)生。 武漢萊斯特電子 27 (英文版 ) easily blame, to prevent the broken window effect. Supervise the leading cadres to play an exemplary role, take the lead in the strict implementation of the code and rule , lead to safeguard the solemnity and authority of the party discipline, ensure that the party discipline and the laws and regulations for implementation in place. Throughout the discipline in the daily supervision and management , strengthen supervision and inspection, from the thorough investigation of violations of discipline behavior. Strengthen to key areas, key departments and key projects as well as the masses reflect the concentration of the units and departments for supervision. strengthening supervision, discipline inspection and supervision of cadres to set an example for pliance with the code and rule is a man must be hexyl, blacksmith needs its own hardware. Discipline inspection ans as the executor of the party discipline, and supervisor of the defenders, for its supervision must be more strictly, discipline inspection and supervision of cadres to firmly establish the awareness of Party Constitution, sense of discipline and rules consciousness, politics loyalty, sense obey. Action speak Ji Ordinance to set an example of the 武漢萊斯特電子 28 regulations of the rule of law, strengthen supervision and accept the supervision of the firmness and consciousness, do ply with and . To firmly establish the discipline must first be disciplined, the supervisor will be subject to the supervision of concept, and consciously safeguard and implement party passes party, take the lead in practicing three strict real strict, so loyal, clean, play. To be good at learning, the Constitution and the code as morality, politics and brought to fruition。 heart tired, calm. Grow up, mature, this society read. Tired and sad, squat down, to their a hug. Because the world no one can sympathize with you, have mercy on you. You cry, tears is your own。t helpless, because they are still alive, is still a dream, the sun still, we still. Lost, keep memories。 difficult to myself to move away the heart of stone head. Leave time to spend with her, often reflect my heart, so as to remove your heart of stone. 24, everything does not have to be demanding, e to, everything does not have to care about, over the past。 no matter how many grievances, how unfortable, and ultimately to heal themselves or their own, others may got you to fort, but never know your heart is how wanjianchuanxin. 12, ma39。t always take everything back to things, and don39。秒表可以計(jì)時(shí) 69 秒,并 060循環(huán)計(jì)時(shí)。 在主從 RS 觸發(fā)器的 R端和 S端分別增加一個(gè)兩輸入端 的與門 G11 和 G10,將 Q端和輸入端經(jīng)與門輸出為原 S端,輸入端稱為 J端,將 Q端與輸入端經(jīng)與門輸出為原 R端,輸入端稱為K端。 第六章 組合邏輯電路 本章節(jié)配套模塊電路: 二 十進(jìn)制優(yōu)先編碼器模塊 武漢萊斯特電子 21 4 線 10 線譯碼器模塊 數(shù)碼管顯示模塊 編碼器 說明: 將二進(jìn)制數(shù)碼 0 和 1 按一定規(guī)律編排起來,用來表示某種信息含義的一串符號(hào)稱為編碼,具有編碼功能的邏輯電路稱為編碼器。 低頻功率放大器 模塊組成: 音頻集成 功放 LM386 武漢萊斯特電子 19 說明: 電路接通后,音頻信號(hào)經(jīng) C1耦合加至 LM386 輸入端第三腳,經(jīng)功率放大后由輸出端 5 腳 輸出,經(jīng) C4 耦合后加至揚(yáng)聲器 LS1 兩端。此脈沖電壓作為可控硅 VS的觸發(fā)信號(hào)。晶閘 管有三個(gè)電極:陽極 A、陰極 K 和控制極 G。) 動(dòng)態(tài)參數(shù)測(cè)試 1 Vi(mv) 20 40 60 80 100 VGS=0 V1 結(jié)型場(chǎng)效應(yīng)管的輸出特性曲線 武漢萊斯特電子 12 V2 Rds VGS=1/4Vp V1 V2 Rds VGS=1/2Vp V1 V2 Rds VGS=3/4Vp V1 V2 Rds ③ 改變 VGS= Vp/ Vp/ 3Vp/4, 重復(fù)實(shí)驗(yàn)步驟 ② 2 、分壓式共源放大電路測(cè)試 武漢萊斯特電子 13 分壓式共源放大電路 ① 按分壓式共源放大電路圖 (圖 1)接線 ② 測(cè)量靜態(tài)工作點(diǎn) ,接通電源 VCC,使 Vi= 0,測(cè)量 Vg、 Vs、 Vd、算出 Vds 和 Id填入下表中 動(dòng)態(tài)參數(shù)測(cè)試 2 Vg(V) Vs(V) Vd(V) Vds(V) Id(V) ③ 測(cè)量電壓放大倍數(shù),輸入 f=1KHZ,有效值為 的正弦電壓,測(cè)出輸出電壓 Vo,并計(jì)算出 Au,填入下表中。 ⑶ 將三端可調(diào)式集成式穩(wěn)壓電源模塊的電壓調(diào)到 +12V。測(cè)試其基極電流 IB 和集電極電流 IC 。 12V、177。為深化職業(yè)教育改革創(chuàng)新,打造一款符合《國(guó)家中長(zhǎng)期教育改革和發(fā)展規(guī)劃綱要(20202020 年 )》的電工電子實(shí)驗(yàn)實(shí)訓(xùn)裝備。通過扭子開關(guān)選擇半波整流、全波整流、橋式整流等整流方式以及電容濾波、電感濾波、不濾波等濾波方式 實(shí)驗(yàn)設(shè)置: 通過觀察實(shí)驗(yàn)現(xiàn)象,測(cè)試實(shí)驗(yàn)參數(shù) 讓學(xué)生了解系統(tǒng)設(shè)計(jì)中電源中整流、濾波電路的重要性。 實(shí)驗(yàn)要求 了解三極管電流放大特點(diǎn); 了解特性曲線、主要參數(shù)、溫度對(duì)特性的影響; 武漢萊斯特電子