M339175 八、新型說明： 【新型所屬之技術領域】 >本創作係與電子電路有關，特別是指可消除聲音 设備在開機時的爆音狀況的一種爆音消除電路。 【先前技術】 按’-般聲音輸出設備在開機時，會有爆音現象 2於在開機時，電源的狀態尚不穩定，突波被誤認為是 =，再經由放大電__，使得突波經放大 為爆音，而成為改善的課題。 付 中華民國公告第1275312號「防爆音電路」發 =為了 ^爆音問題所發展出的技術。其在先前技術說 日中：揭路出-種二電晶體的並聯架構，其主要是在電源 啟動前先啟動該二電晶體’藉以翻消除爆音的效果。’、 15 =，此種使用電晶體的技術，頂多僅能做到降低突 =錢而已，不能完全耻紐，其原 ==:的：，有些微，』 【新型内容】 其可消除聲音輸出設 本創作提供一種爆音消除電路 備在開機時的爆音。 緣是，為了達成前述優點，依據本創作所提供之 爆音消除電路’包含有：-電源、—接地蠕、以及一揚聲 益；-音職大H ’兩齡職胁該電如及該揚聲突 4 M339175 之Γ端，—延遲單元，該延遲單元之—端係連接於該電源； -第-電控開關’具有_控制端以及二導通端，該控制端 係與違延遲單元連接，其第一導通端連接於該揚聲器之另 -端，以及-第二電控開關，具有—控制端以及二導通端， 5該控制端係與該延遲單元連接，而該二導通端分別連接於 該接地輪以及該第一電控開關的第二導通端。藉此，可達 到完全消除爆音的效果。 【實施方式】 10 為了詳細說明本創作之電路結構及特點所在，茲舉以 下之一實施例並配合圖式說明如后，其中： 如第一圖所示，本創作一實施例所提供之一種爆音消 除電路10,主要由一電源Vcc、一接地端GND、一揚聲器 11、一音源放大器15、一延遲單元21 ' —第一電控開關 I5 Q1、以及一第二電控開關Q2所組成，其中： 5亥音源放大器15，兩端分別連接於該電源vcc以及該 揚聲器11之一端。 該延遲單元21，包括一電阻R以及一電容c，該電阻 R的第一端R11連接於該電源Vcc。而該電容c的兩端分 20別連接於該接地端GND以及該電阻R的第二端R22。 該第一電控開關Q1，係為一半導體開關，本實施例中 係為一 NMOS(N通道MOSFET)，具有一控制端G以及二 ^通端S，D。遠控制端G係為閘極，連接於該電阻r的第 二端R22,其第一導通端S係為源極，第二導通端D為汲 5 M339175 極，該第一導通端s連接於該揚聲器u之另一端。M339175 VIII. New description: [New technology field] > This creation is related to electronic circuits, especially a pop-up elimination circuit that can eliminate the popping situation of sound equipment when it is turned on. [Prior Art] According to the '---the sound output device, when the device is turned on, there will be a popping phenomenon. 2 At the time of power-on, the state of the power supply is still unstable, the glitch is mistaken as =, and then the oscillating wave is made by amplifying the __ It is magnified to be a popping sound and becomes an issue of improvement. Pay the Republic of China Announcement No. 1275312 "Explosion-proof sound circuit" issued = technology developed for the problem of popping. In the prior art, it was revealed that the parallel architecture of the two transistors was mainly used to activate the two transistors before the power was turned on. ', 15 =, this technology using the transistor, at most can only reduce the sudden = money only, can not completely shame, its original ==:: some slightly, 』 [new content] it can eliminate the sound Output Design This creation provides a pop-up cancellation circuit for popping at startup. The reason is that, in order to achieve the aforementioned advantages, the sound-removing circuit provided by the present invention includes: - power supply, - grounding creep, and a sound of sound; - sound professional H' two-year job threat and the power The end of the spur 4 M339175, the delay unit, the end of the delay unit is connected to the power supply; the -the electronic control switch has a _ control terminal and a two-conductance terminal, and the control terminal is connected to the delay-delay unit. The first conductive end is connected to the other end of the speaker, and the second electronic control switch has a control end and a second conductive end, wherein the control end is connected to the delay unit, and the two conductive ends are respectively connected to The grounding wheel and the second conducting end of the first electronically controlled switch. In this way, the effect of completely eliminating the popping sound can be achieved. [Embodiment] 10 In order to explain in detail the circuit structure and characteristics of the present invention, one of the following embodiments will be described with reference to the following description, wherein: as shown in the first figure, one of the embodiments of the present invention is provided. The pop-up canceling circuit 10 is mainly composed of a power source Vcc, a grounding terminal GND, a speaker 11, a sound source amplifier 15, a delay unit 21', a first electronic control switch I5 Q1, and a second electronic control switch Q2. Wherein: 5 Haiyin source amplifier 15, two ends are respectively connected to the power source vcc and one end of the speaker 11. The delay unit 21 includes a resistor R and a capacitor c. The first end R11 of the resistor R is connected to the power source Vcc. The two ends of the capacitor c are connected to the ground GND and the second end R22 of the resistor R. The first electronically controlled switch Q1 is a semiconductor switch. In this embodiment, it is an NMOS (N-channel MOSFET) having a control terminal G and two terminals S and D. The remote control terminal G is a gate connected to the second end R22 of the resistor r, the first conduction end S is a source, the second conduction end D is a 汲5 M339175 pole, and the first conduction end s is connected to The other end of the speaker u.
該第二電控開關Q2，係為一半導體開關，本實施例中 係為一 NMOS(N通道MOSFET)，具有一控制端G以及二 ‘通知S，D。a亥控制^ G係為閘極，連接於該電阻r的第 5 一端R22，該二導通端S，D為源極以及没極，其中源極s 連接於該接地端GND ,汲極d則連接於該第一電控開關 Q1的第二導通端D(即汲極）。 另外，该電阻R的第一端R22亦可接收外來的控制訊 5虎對该^一電控開關Q1，Q2直接進行控制。 本創作之工作狀態說明如下： 當該電源Vcc剛開始供電時，該音源放大器15即導通 而啟動，此時聲音訊號可傳遞至該揚聲器u的—端， 15 同時，由於電源並未穩定，因此，突波所產生的爆丄^ 併傳遞至揚聲器11中然而，此時由於該電容C尚去日亦一 該第-電控開關Q1以及該第二電控開關電’ 位即處於低電位而未導通，因此，該揚聲器u 電 路即不會導通’無法形成聲音輸出的迴路，揚聲=的線 發出任何聲音，因此，也不會有爆音出現。°。J無法 在電源VCC供電一段時間後，該電容c充電$ 得該二電控開關QLQ2的控制端G電位處於高:使 通’因此’該揚聲器11另一端的線路即導通而形 出的迴路，揚聲II n則可發出聲音，此時因該電《輸 經穩定，不會有電壓突波的現象，該揚聲器u = cc已 爆音。 不會發出 6 20 M339175 由上可知，本發明主要是在爆音產生時先暫時讓揚聲 器線路無法形成迴路而不導通，因此即不會發出包括爆音 在内的任何聲音，即可完全免除掉爆音的問題，而具有優 於習知技術的功效。 M339175 【圖式簡單說明】 第一圖係本創作一實施例之電路結構圖。 【主要元件符號說明】 5 10爆音消除電路 11揚聲器 15音源放大器 21延遲單元 GND接地端 Vcc電源 C電容 ίο R電阻 R11第一端 R22第二端 Q1第一電控開關Q2第二電控開關 G閘極 S源極 D >及極The second electronically controlled switch Q2 is a semiconductor switch. In this embodiment, it is an NMOS (N-channel MOSFET) having a control terminal G and two 'notification S, D. A Hai control ^ G is a gate connected to the fifth end R22 of the resistor r, the two conducting ends S, D are source and no pole, wherein the source s is connected to the ground GND, and the drain d is Connected to the second conduction terminal D (ie, the drain) of the first electronic control switch Q1. In addition, the first end R22 of the resistor R can also receive an external control signal to directly control the electronic control switches Q1, Q2. The working state of the creation is as follows: When the power supply Vcc is just starting to supply power, the sound source amplifier 15 is turned on and activated, and the sound signal can be transmitted to the end of the speaker u, 15 at the same time, since the power supply is not stable, The burst generated by the spurt is transmitted to the speaker 11. However, at this time, since the capacitor C is still in the same state, the first electronic control switch Q1 and the second electronically controlled switch are in a low potential. It is not turned on, therefore, the speaker u circuit will not turn on the circuit that cannot form the sound output, and the speaker = sound will make any sound, so there will be no popping. °. J can not be charged after the power supply VCC is powered for a period of time, the capacitor c is charged: the potential of the control terminal G of the second electronically controlled switch QLQ2 is high: the circuit that turns on the 'therefore the line at the other end of the speaker 11 is turned on, The sound II n can make a sound. At this time, because the electricity is stable, there will be no voltage surge, and the speaker u = cc has exploded. It does not emit 6 20 M339175. As can be seen from the above, the present invention mainly makes the speaker line unable to form a loop and is not turned on when the popping sound is generated, so that no sound including popping sound can be completely eliminated. The problem is better than the power of the prior art. M339175 [Simplified description of the drawings] The first figure is a circuit structure diagram of an embodiment of the present creation. [Main component symbol description] 5 10 pop-up elimination circuit 11 speaker 15 sound source amplifier 21 delay unit GND ground terminal Vcc power supply C capacitor ίο R resistor R11 first end R22 second end Q1 first electronic control switch Q2 second electronic control switch G Gate S source D > and pole