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如果我們一味逃避生活中的悲傷,悲傷只會(huì)變得更強(qiáng)烈更真實(shí) —— 悲傷原本只是稍縱即逝的情緒,我們卻固執(zhí)地耿耿于懷 By utilizing our breath we soften our experiences. If we dam them up, our lives will stagnate, but when we keep them flowing, we allow more newness and greater experiences to 。我們假裝一切仿佛都不曾發(fā)生,以此試圖忘卻傷痛,可就算隱藏得再好,最終也還是騙不了自己。 Then in high school, think don39。二十年的人生軌跡深深淺 淺,突然就感覺到有些事情,非做不可了。s plaint. In a statement the Russian side added: We found no racist insults from fans of CSKA. Age has reached the end of the beginning of a word. May be guilty in his seems to passing a lot of different life became the appearance of the same day。s about how he felt and I would like to speak to him first to find out what his experience was. Uefa has opened disciplinary proceedings against CSKA for the racist behaviour of their fans during City39。t charge you more than 35% of your pensation if you win the case. You are clear about the terms of the agreement. It might be best to get advice from an experienced adviser, for example, at a Citizens Advice Bureau. To find your nearest CAB, including those that give advice by , click on nearest CAB. For more information about making a claim to an employment tribunal, see Employment tribunals. The (lack of) air up there Watch m Cay man Islandsbased Webb, the head of Fifa39。 李陽 老 師認(rèn)真負(fù)責(zé)的工作態(tài)度,嚴(yán)謹(jǐn)?shù)闹螌W(xué)精神和深厚的理論水平都使我受益匪 淺。 學(xué)友情深,情同兄妹。 參考文獻(xiàn) 【 1】 童詩白 , 華成英 . 模擬電子技術(shù)基礎(chǔ)【 M】 .北京: 高等教育出版社 , 【 2】 曾興雯 , 劉乃安 , 陳建 . 高頻電子線路 【 M】 . 北京: 高等教育出版社 , 【 3】 彭介華 , 電子技術(shù)課程設(shè)計(jì)指導(dǎo) 【 M】 .北京: 高等教育出版社 【 4】 謝嘉奎,電子線路 【 M】 .北京:高等教育出版社, 1984 【 5】 武秀玲,沈偉慈 .高頻電子線路【 M】 .西安:西安電子科技大學(xué)出版社, 1995 【 6】 [美 ] ,秦士,姚玉潔議 .固態(tài)無線電技術(shù) .北京:高等教育出版社, 1987 【 7】 Horowitz P,Hill Art of Electronic,Second York:Cambridge University Press,1989 英文摘要 Wireless FM radio high frequency amplifier circuit research and design Li Yaofeng (anhui agricultural university information and puter college of hefei 230036) Abstract: this article from wireless FM radio elementary principle, the design scheme of the system is established, will launch on the system is divided into two parts and receive part of most of the part of the function and effect are analyzed and studied. Sure the electrical parameters, through to the oscillating circuit, amplifying circuit and the same type circuit contrast, and focuses on the analysis of the amplifier circuit design, 23 and finally determined the inter circuit diagram. Then using Multisim simulation software of the simulation module to enlarge and simulation signal is analyzed. Keywords: interphone, FM, amplifying circuit ,simulation analysis 致 謝 四年的大學(xué)生活就快走入尾聲,我的校園生活就要?jiǎng)澤暇涮?,心中是無盡的難舍與眷戀。 22 5 結(jié)束語 本文針對調(diào)頻對講機(jī)放大電路部分進(jìn)行了研究,設(shè)計(jì)了一種 OCL 音頻放大 電路。產(chǎn)生這種誤差的主要原因在于三級管的輸入輸出特性總是存在非線性,而理論分析是將三極管作了線性化處理。由圖可知 放大電路前級的輸出電壓就是后級的輸入電壓。經(jīng)過靜態(tài)工作點(diǎn)的調(diào)試分析當(dāng) R1=1kΩ, R2=220Ω, R3=330 kΩ時(shí) 整個(gè)放大電路比較穩(wěn)定,靜態(tài)工作點(diǎn)設(shè)置的合理,三極管工作在放大區(qū)。用直流電壓表測 Q2, Q3,Q4 基極靜態(tài)電位,測試電路如圖 輸入信號峰值 /V 直流電流表 1 讀數(shù) /mA 直流電流表 2 讀數(shù) /mA 功率表讀數(shù) /W OCL 電路輸出信號正向峰值 /V 11 18 圖 放大電路靜態(tài)工作點(diǎn)的調(diào)試 只 改變電阻 R3 的電阻值 靜態(tài)工作點(diǎn)的調(diào)試結(jié)果見 表 3: 表 3 靜態(tài)工作點(diǎn)的調(diào)試 只 改變電阻 R2 的電阻值靜態(tài)工作點(diǎn)的調(diào)試結(jié)果見表 4: 表 4 靜態(tài)工作點(diǎn)的調(diào)試 R2/Ω 160 170 180 190 200 210 220 UCQ1/nV UCQ3/V UCQ4/V R3/kΩ 240 260 290 300 310 320 330 UCQ1/nV UCQ3/V UCQ4/V 19 只改變電阻 R1 的電阻值靜態(tài)工作點(diǎn)的調(diào)試結(jié)果見表 5: 表 5 靜態(tài)工作點(diǎn)的調(diào)試結(jié)果 R1/Ω 866 900 931 953 976 1000 1050 UCQ3/V UCQ4/V 同以上仿真步驟發(fā)現(xiàn)只改變電阻 R4或 R5的阻值 對整個(gè)電路的靜態(tài)工作點(diǎn)基本上沒影響 。 分析與仿真 對 OCL 放大電路仿真圖如圖 : 圖 VBB=9V 時(shí)的仿真圖 仿真數(shù)據(jù)如表 1: 表 1 VBB=9V 時(shí) OCL 測試數(shù)據(jù)