1260968 九、發明說明： 【發明所屬之技術領域】 #本發明相-種電軒擾防止電路，尤其是—種應用於電子 4置的a 5fl連接埠上，彻濾波元件組成旁賴波電路，以利用 濾波元件的辭雜濾去轩裝置音贿接相近之電路在工作 時產生的噪聲，以達到電磁干擾的防止。 【先前技術】 I電磁波現象是由於動態電、磁能量的互換紐化，以波動的 f•式而存在’並且電場與磁場是相互而生的，當空間巾某一點產 生隨時間變化的電場’則在該點附件週圍便會產生隨時間變化的 磁場，被感應而生的磁場在其附近又感應出磁場，這種電磁感應 在介質m中傳播的現象’是為電磁傳播的基本原理，但隨時間 變化在電磁場中相互感應傳触音的現象，_電磁干擾（簡稱 EM)。當電磁僧縣超過受害電路的靈敏度時，會鴨的感到 受害電路動作不正常，則必_來電磁相容（_emc)環境設 計來改善電磁干擾（EMI)的現象。 由於目前電子裝置的工作頻率越來越高，電磁干擾 越嚴重，其原因是頻率越高，電磁波纟 ， 疚波長輪，因此在系統内很 容易造成不細㈣反射，從岭響電抒置的電路性能，進而影 響其功能的軸。制是錢子的音_鱗魏中，電磁 干擾造成的影響相當明顯’通常音訊連接埠均包括_音訊連接碑 1260968 連接器，該音訊連接埠連接器至少包括左聲道訊號端子、右聲道 訊號端子及接地端子，通常該音訊連接料接轉接於電子装置 的電路板上’該音訊連解連接糾左聲道與右聲道端子分別藉 由電子裝置的電路板上的電子線路與設置於電路板上的音訊處理 早7G輪’秘地端子直接與魏板上的接地線路連接，而與左、 右聲音端子及電路板上的電子線卿成—個迴路，此種設置方式 的不足之處在於該音訊連接魏接器附近f路紅作時產生的帝 磁干擾會沿此該接地端傳子傳導至音訊連接埠連接糾部，從^ 影響該音訊連接埠連接器左聲道與右聲道辭所的音訊訊號 的電學性能，it*影響電子魏的實現。 有馨於此，實有必要—種機降低音訊連接埠 路對音訊連接埠之電軒擾的防護f路。 ％ 【發明内容】 防護==:=提二τ連接埠_干擾的 電路板上 子衣m “瞒接4設置於電子褒置的 的音,理/匕括訊號接腳與接地端，該訊號接腳與電子裝置 而_1元1=味接地端與—^件的第—端輕接， 此藉由該濾波元件;;Γ€子裝置電路板的⑽接地端_，如 W率特性’而防止音訊連接_近電路在工 1260968 作_生的電磁干擾沿接地端導接至音訊連接痒内部，而干擾气 號接腳傳輸之訊號的性能，從而保證電子裝置功能的達成。° 相較於習知技術，本發明在電子裝置音訊連接璋之接地端盘 ::二=音訊連接埠附近電路在工作時產生的電磁干擾 ，日δί1連接埠内部，而干擾訊號接聊傳輸之訊號的 性月b，從而保證電子裝置功能的達成。 步的瞭解， #為使對本發_目的、構造特徵及其功能有進一 茲配合圖示詳細說明如下： 【實施方式】 明的：將以電子裝置的音訊輸入迴路與輪出迴路為例說明本發 如心為本實騎奸輯鱗㈣軒擾防 路弟一渴峨麵，為制於電子灯物罐人迴路上， 物破理單元中以 進行放核雜，物瞒鱗心少 左聲道輸入端HH及接地端舰，在實㈣用二輸*100、 a-立m“ 在貝際應用中該音訊連接埠10 且該音訊連接埠連_接於電路板上， ί耳道輪人端職左聲道輪人端及接地端1G2為_於 忒音汛連接埠連接器内的導 〃、、又； 认立卞°亥曰矾連接埠1〇用於盥外邱 、曰5鱗（未圖示）相對接，而將音訊連接崞所傳輸的音: 1260968 訊號輸入至電子裝置的音訊處理單元2()。第—圖只是揭示其電路 連接關係，至於其频之物觀構，非本鱗求之重點，故在此 不再贅述。 該右聲道輸入端100與電子裝置系統接地端3〇之間輕接有並 聯設置的第-電阻R1、第—電容〇1及第三電容C3，藉此對右 聲道輸入端1GG輸人的音訊訊號進行濾波，從而得f|j預定頻段的 訊號，而輸入至音“處理單元2〇内。 同理，左聲道輸入端101與電子裝置系統接地端30之間亦耦 接有並聯設置的第二電阻幻、第二電容C2及第四電容，藉 此對右聲道輸入端101輸入的音訊訊號進行濾波，從而得到預定 頻段的訊號’而輸入至音訊處理單元2〇内。 而接地端102與電子裝置系統接地端3〇之間串接一濾波元 件’在本貫施例巾為第五電容cs，如此糊該濾波元件的頻率特 性’而防止hfl連接埠1G附近電路在工作_生的電磁干擾沿接 地鳊102 V接至音汛連接埠10内部，而干擾右聲道輸入端比〇 左聲道輸入端101傳輪之音訊訊號的電學性能，從而保證電子裝 置功能的達成。 請參閱第二騎示’為本實賴型音訊連鱗的電磁干擾防 止電路第二實施例的電路圖，為應用於電子裝置的音訊輸出魏 上’用以將電子裝置音訊處理單元5〇產生之音訊訊號藉由音訊連 接珲40傳輸至外部電子裝置（未圖示），該料連接崞4〇至少包 1260968 用”立^端紙左聲道輪出端401及接地端402，在實際應 用中違曰0L連接埠& — 器焊接於電路板上I—曰鱗鱗連接器，該音訊連接埠連接 .Λ μ右聲道輸出端400、左聲道輸出端4〇1 -tut接Λ4 2為組投於該音訊連接蜂達接器内的導電端子，該音 2=_卜部的音訊連接埠（未圖示）相對接，而將電 第1 M i臟理早I 4G產生的音聰號雜餅部電子裝置。 接闕係’至於其具體之物理結構，非本 案4求之重點，故在此不再贅述。 f ^ t 60 ^fam 波，從而得到預定背理早70 50輸出的音訊訊號進行濾 、版城號’而輸入至右聲道輸出端400。 接有左聲道輪出端4〇1與電子裝置系統接地端⑼之間串 濾波，從而得到預定财的㈣ 輸出的音訊訊號進行 版的減’而輸入至右聲道輸出端4(U。— 件^端4〇2與電子裝置系統接地端6〇之間串接-渡波元 ^，在本魏财料八電容C8，如此__槪件的頻率特 地端料4嶋魏缸料軸電磁干擾沿接 —¥接至音鱗接埠40内部，而干擾右聲道輸出端· 左耸迢輸出端侧傳輸之音訊訊號的電、 置功能的達成。 H’從而㈣電子褒 相較於習知技術，本發明在電子裂置音辑接蜂之接地端與 1260968 電子裝置系統接地端之間設置一濾波元件，利用該該濾波元件的 頻率特性，而防止音訊連接埠附近電路在工作時產生的電磁干擾 〜接地端導接至音訊連接埠内部，而干擾訊號接腳傳輸之訊號的 性能，從而保證電子裝置功能的達成。 &綜上所述，本發明符合發明專利之要件，爰依法提出專利申 二准以上所述者僅為本發明之較佳實_，舉凡熟悉本發明 财__之物㈣_化，皆應涵 夏於以下之申^專利範圍内。 .…—... 【圖式簡單說明】 施例 第-圖林翻音_鱗的電 的電路圖，為應用於電子装置的立· "路弟一貫 ^ ^ 日况輪入迴路上。 弟-圖為本翻音鱗鱗 的電路圖，為應用於電子壯 十擾防止電路第二實施例 【主要元賴"叫爾丨迴路上。 音訊連接埠 右聲道輸入端. 10、40 左聲道輸入端 100、 400 接地端 101、 401 音訊處理單元 102、 402 第一電阻 20、50 第一電容 R1 C1 1260968 第三電容 C3 第二電阻 R2 第二電容 C2 第四電容 C4 第五電容 C5 電子裝置系統接地端 30、60 第六電容 C6 第七電容 C7 第八電容 C81260968 IX. Description of the invention: [Technical field to which the invention pertains] # The invention relates to an electric entanglement prevention circuit, in particular to an a 5fl connection 应用于 which is applied to an electronic 4, and the filter element constitutes a bypass circuit, In order to achieve the prevention of electromagnetic interference, the noise generated by the circuit of the similar circuit is used to filter the electromagnetic interference. [Prior Art] I electromagnetic wave phenomenon is due to the interchange of dynamic electric and magnetic energy, and exists in the f· equation of fluctuating 'and the electric field and the magnetic field are mutually generated. When the space towel produces a time-varying electric field at a certain point' Then, a magnetic field changes with time around the attachment, and the induced magnetic field induces a magnetic field in the vicinity thereof. The phenomenon of electromagnetic induction propagating in the medium m is the basic principle of electromagnetic propagation, but The phenomenon of mutual sensing of the transmitted sound in the electromagnetic field with time, _ electromagnetic interference (EM). When Electromagnetic Jixian exceeds the sensitivity of the victim circuit, the duck will feel that the victim circuit is not functioning properly, and the electromagnetic compatibility (_emc) environment design must be used to improve the electromagnetic interference (EMI) phenomenon. Due to the increasing operating frequency of electronic devices, the electromagnetic interference is more serious. The reason is that the higher the frequency, the electromagnetic wave, and the 疚 wavelength wheel, so it is easy to cause not (4) reflection in the system. Circuit performance, which in turn affects the function of the axis. The system is the sound of the money _ 魏 魏, the impact of electromagnetic interference is quite obvious 'usually the audio interface 包括 includes _ audio connection monument 1260968 connector, the audio interface 至少 connector at least includes the left channel signal terminal, right channel The signal terminal and the grounding terminal are generally connected to the circuit board of the electronic device. The audio connection and the left channel and the right channel terminal are respectively connected by electronic circuits and settings on the circuit board of the electronic device. The audio processing on the circuit board is as early as the 7G wheel's secret terminal is directly connected to the grounding line on the Wei board, and the left and right sound terminals and the electronic line on the circuit board are in a loop. The reason is that the magnetic interference generated when the audio connection is in the vicinity of the f-way red is transmitted along the ground end to the audio connection and the connection correction portion, from the influence of the audio connection, the left channel of the connector The electrical performance of the audio signal of the right channel resigns, and it* affects the realization of the electronic Wei. It is necessary to have this in mind. It is necessary to reduce the audio connection and the protection of the audio connection. % [Summary of the invention] Protection ==:= 2 τ connection 埠 _ interference on the board on the board m " 瞒 4 is set to the sound of the electronic device, the signal / pin and the ground, the signal The pin and the electronic device are _1 yuan 1 = the grounding end is lightly connected to the first end of the device, by means of the filtering component; the (10) grounding terminal _, such as the W rate characteristic of the sub-device circuit board And to prevent the audio connection _ near-circuit in the 1260968 _ raw electromagnetic interference along the ground end to connect to the audio connection itch inside, and interfere with the performance of the signal transmitted by the gas pin, thus ensuring the realization of the function of the electronic device. According to the prior art, the present invention is in the grounding end of the audio interface of the electronic device:: 2 = the electromagnetic interference generated by the circuit in the vicinity of the audio connection port, the day δί1 is connected to the inside, and the signal of the interference signal is transmitted. Month b, so as to ensure the realization of the function of the electronic device. The understanding of the step, # is to make the original _ purpose, structure features and functions have a detailed description of the following: [Embodiment] Ming: will be electronic devices Audio input loop and round-out As an example, the hair is based on the fact that the scales of the horses are ridiculous (four) Xuan harassment and anti-road brothers are thirsty, for the electronic light cans on the human circuit, the material is broken in the unit to carry out the nuclear, the scales The heart is less left channel input terminal HH and grounding ship, in real (four) with two transmission *100, a-li m" in the inter-communication application, the audio connection 埠10 and the audio connection is connected to the circuit board, ί 耳 轮 人 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左 左Qiu and 曰5 scales (not shown) are connected to each other, and the sound transmitted by the audio interface is input: 1260968 signal is input to the audio processing unit 2 () of the electronic device. The first figure only reveals the connection relationship of the circuit. As for the object structure of the frequency, it is not the focus of this scale, so it will not be repeated here. The right channel input terminal 100 and the electronic device system ground terminal 3〇 are lightly connected with a first resistor R1, a first capacitor 〇1 and a third capacitor C3 arranged in parallel, thereby inputting a right channel input terminal 1GG The audio signal is filtered to obtain a signal of a predetermined frequency band of f|j, and is input to the sound "processing unit 2". Similarly, the left channel input terminal 101 and the electronic device system ground terminal 30 are also coupled in parallel. The second resistor phantom, the second capacitor C2 and the fourth capacitor are set, thereby filtering the audio signal input by the right channel input terminal 101 to obtain the signal of the predetermined frequency band and inputting into the audio processing unit 2〇. A filter element is connected in series between the ground terminal 102 and the grounding terminal 3 of the electronic device system. The fifth capacitor cs is in the present embodiment, so that the frequency characteristic of the filter component is prevented, and the circuit near the hfl connection 埠1G is prevented from working. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Please refer to the The circuit diagram of the second embodiment of the electromagnetic interference prevention circuit of the present invention is used to transfer the audio signal generated by the electronic device audio processing unit 5 to the audio output applied to the electronic device. The audio port 珲40 is transmitted to an external electronic device (not shown), and the material port 崞4〇 is at least 1260968. The left end wheel end 401 and the ground end 402 of the vertical end paper are violated by 0L in practical applications. The connection amp & is soldered to the I-曰 scale connector on the board, the audio connection 埠 is connected. Λ μ right channel output 400, left channel output 4 〇 1 -tut Λ 4 2 for group cast The audio terminal is connected to the conductive terminal in the bee-connector, and the audio interface 未 (not shown) of the sound 2=_bu is connected to each other, and the sound of the 1st M i is early and the I 4G is generated. Electronic device. The connection between the system and the specific physical structure is not the focus of this case, so it will not be repeated here. f ^ t 60 ^fam wave, so that the audio signal outputted by the predetermined backing 70 50 is filtered, and the digital signal is input to the right channel output terminal 400. A series of filtering is performed between the left channel wheel end terminal 4〇1 and the electronic device system ground terminal (9), so that the predetermined (four) output audio signal is reduced by the version and input to the right channel output terminal 4 (U. — The connection between the ^ terminal 4〇2 and the grounding terminal 6〇 of the electronic device system - the wave element ^, in the Wei Cai material eight capacitor C8, such __ 槪 的 frequency of the special end material 4 嶋 Wei cylinder shaft electromagnetic The interference is connected to the inside of the squadron 40, and interferes with the right of the right channel output terminal and the output signal of the audio signal transmitted from the output side of the left channel. H' thus (4) electronic 褒 compared to the habit According to the prior art, a filter component is disposed between the grounding end of the electronic splitting sounding bee and the grounding end of the 1260968 electronic device system, and the frequency characteristic of the filtering component is utilized to prevent the circuit near the audio connecting port from being generated during operation. The electromagnetic interference ~ grounding terminal is connected to the inside of the audio connection port, and interferes with the performance of the signal transmitted by the signal pin, thereby ensuring the realization of the function of the electronic device. In summary, the invention complies with the requirements of the invention patent, Patent application The above is only the preferred embodiment of the present invention. Anyone who is familiar with the invention may not be included in the scope of the following claims. ........ Brief Description] The electric circuit diagram of the example-Turin's reverberation_scale is applied to the electronic device's Li "Ludi consistently ^^ The situation is on the circuit. Brother-picture is the sound scale The circuit diagram is applied to the second embodiment of the electronic strong disturbance prevention circuit [mainly on the basis of the circuit]. The audio connection is the right channel input terminal. 10, 40 left channel input terminal 100, 400 ground terminal 101 401 audio processing unit 102, 402 first resistor 20, 50 first capacitor R1 C1 1260968 third capacitor C3 second resistor R2 second capacitor C2 fourth capacitor C4 fifth capacitor C5 electronic device system ground terminal 30, 60 sixth Capacitor C6 seventh capacitor C7 eighth capacitor C8