電腦的麥克風(fēng)電路
The sound card for a PC generally has a microphone input, speaker output and sometimes line inputs and outputs. The mic input is designed for dynamic microphones only in impedance range of 200 to 600 ohms. Lazar has adapted the sound card to use a common electret microphone using this circuit. He has made a composite amplifier using two transistors. The BC413B operates in common emitter to give a slight boost to the mic signal. This is followed by an emitter follower stage using the BC547C. This is necessary as the mic and circuit and battery will be some distance from the sound card, the low output impedance of the circuit and screened cable ensuring a clean signal with minimum noise pickup.
JFET-MOSFET耳機(jī)功放電路
10月3日消息,蘋果AirPodsPro2比上一代增加1.5小時(shí)聆聽時(shí)間,而監(jiān)管文件顯示,這一提升部分是由于耳機(jī)本體的電池增大了。
關(guān)鍵字: 蘋果 AirPods Pro 2 耳機(jī)傳統(tǒng)上,耗盡型 MOSFET 被歸類為線性器件,因?yàn)樵礃O和漏極之間的傳導(dǎo)通道無(wú)法被夾斷,因此不適合數(shù)字開關(guān)。這種誤解的種子是由 Dawon Kahng 博士播下的,他在 1959 年發(fā)明了第一個(gè)耗盡型 MOSFET——只...
關(guān)鍵字: MOSFET 數(shù)字開關(guān)音頻創(chuàng)新品牌萊維特官宣發(fā)布新一代高性能聲卡CONNECT 6,現(xiàn)已上市 上海2022年9月23日 /美通社/ -- 奧地利知名音頻創(chuàng)新品牌萊維特剛剛發(fā)布了新一代高性能聲卡- CONNECT 6。作為創(chuàng)新型音頻...
關(guān)鍵字: NEC 聲卡 移動(dòng)設(shè)備 電腦為了最大限度地減少開關(guān)階段的功耗,必須盡快對(duì)柵極電容器進(jìn)行充電和放電。市場(chǎng)提供了特殊的電路來(lái)最小化這個(gè)過(guò)渡期。如果驅(qū)動(dòng)器可以提供更高的柵極電流,則功率損耗會(huì)降低,因?yàn)楣β仕矐B(tài)的峰值會(huì)更短。一般來(lái)說(shuō),柵極驅(qū)動(dòng)器執(zhí)行以下任務(wù)...
關(guān)鍵字: 柵極驅(qū)動(dòng)器 MOSFET今天,小編將在這篇文章中為大家?guī)?lái)量子計(jì)算機(jī)的有關(guān)報(bào)道,通過(guò)閱讀這篇文章,大家可以對(duì)量子計(jì)算機(jī)具備清晰的認(rèn)識(shí),主要內(nèi)容如下。
關(guān)鍵字: 量子計(jì)算機(jī) 計(jì)算機(jī) 電腦