ACCEL放大器

一(yi)、美國ACCEL公司簡介
Accel Instruments設計、開發、制造(zao)和(he)銷售(shou)電(dian)子(zi)(zi)(zi)儀(yi)(yi)器(qi)(qi)(qi)，以滿足電(dian)子(zi)(zi)(zi)臺架測(ce)(ce)(ce)試(shi)(shi)(shi)和(he)研發的(de)專(zhuan)(zhuan)(zhuan)業需求(qiu)。他(ta)們專(zhuan)(zhuan)(zhuan)注(zhu)于電(dian)力電(dian)子(zi)(zi)(zi)測(ce)(ce)(ce)試(shi)(shi)(shi)和(he)測(ce)(ce)(ce)量，例如(ru)穩壓(ya)器(qi)(qi)(qi)、電(dian)池充電(dian)器(qi)(qi)(qi)、放(fang)大器(qi)(qi)(qi)等(deng)。他(ta)們通過提供創新產品來緩(huan)解客戶的(de)測(ce)(ce)(ce)試(shi)(shi)(shi)和(he)測(ce)(ce)(ce)量挑戰，從(cong)而滿足客戶的(de)需求(qiu)。專(zhuan)(zhuan)(zhuan)注(zhu)電(dian)力電(dian)子(zi)(zi)(zi)的(de)儀(yi)(yi)器(qi)(qi)(qi)專(zhuan)(zhuan)(zhuan)注(zhu)于電(dian)力電(dian)子(zi)(zi)(zi)設備和(he)系(xi)統(tong)。這些器(qi)(qi)(qi)件包括線性穩壓(ya)器(qi)(qi)(qi)或LDO、開關(guan)模(mo)式(shi)電(dian)源(SMPS)、電(dian)池充電(dian)器(qi)(qi)(qi)等(deng)。他(ta)們制造(zao)電(dian)力電(dian)子(zi)(zi)(zi)設備測(ce)(ce)(ce)試(shi)(shi)(shi)和(he)測(ce)(ce)(ce)量儀(yi)(yi)器(qi)(qi)(qi)。

Accel Instruments為電(dian)(dian)子(zi)臺架測(ce)(ce)(ce)試(shi)(shi)和研(yan)發(fa)(fa)的專(zhuan)業需求設計，開發(fa)(fa)，制造和銷(xiao)售電(dian)(dian)子(zi)儀器(qi)。公司專(zhuan)注于電(dian)(dian)力(li)電(dian)(dian)子(zi)測(ce)(ce)(ce)試(shi)(shi)和測(ce)(ce)(ce)量(liang)，如(ru)穩(wen)壓器(qi)、電(dian)(dian)池充電(dian)(dian)器(qi)、放大(da)器(qi)等(deng)。公司通(tong)過提供創新產品(pin)來解(jie)決(jue)客(ke)戶(hu)的需求，從而(er)緩(huan)解(jie)測(ce)(ce)(ce)試(shi)(shi)和測(ce)(ce)(ce)量(liang)的挑戰(zhan)。Accel Instruments專(zhuan)注于電(dian)(dian)力(li)電(dian)(dian)子(zi)、電(dian)(dian)力(li)電(dian)(dian)子(zi)設備和系統。TS200調制電(dian)(dian)源和TS250波形放大(da)器(qi)是許多(duo)測(ce)(ce)(ce)試(shi)(shi)和測(ce)(ce)(ce)量(liang)應用的儀器(qi)，例如(ru)LDO PSRR測(ce)(ce)(ce)量(liang)、電(dian)(dian)池模擬器(qi)、壓電(dian)(dian)放大(da)器(qi)驅(qu)動器(qi)、運算(suan)放大(da)器(qi)CMRR測(ce)(ce)(ce)量(liang)、函數發(fa)(fa)生器(qi)放大(da)器(qi)、瞬態響應測(ce)(ce)(ce)試(shi)(shi)、四象限電(dian)(dian)源、實驗(yan)室功率放大(da)器(qi)等(deng)。

二(er)、美國(guo)ACCEL部(bu)分產(chan)品(pin)介紹
1、美國ACCEL壓電電機驅動器(qi)和放大器(qi)
在許多(duo)精密機電(dian)(dian)(dian)(dian)應(ying)用(yong)中(zhong)都可以找到壓電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)機。驅(qu)(qu)動(dong)(dong)壓電(dian)(dian)(dian)(dian)馬達致動(dong)(dong)器(qi)需要高(gao)電(dian)(dian)(dian)(dian)壓、高(gao)電(dian)(dian)(dian)(dian)流和(he)(he)(he)(he)高(gao)速驅(qu)(qu)動(dong)(dong)器(qi)。TS200和(he)(he)(he)(he)TS250是(shi)高(gao)壓和(he)(he)(he)(he)大(da)電(dian)(dian)(dian)(dian)流驅(qu)(qu)動(dong)(dong)器(qi)/放大(da)器(qi)，專為(wei)驅(qu)(qu)動(dong)(dong)壓電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)機和(he)(he)(he)(he)致動(dong)(dong)器(qi)、壓電(dian)(dian)(dian)(dian)平臺和(he)(he)(he)(he)其他壓電(dian)(dian)(dian)(dian)元件而(er)設計(ji)。它的高(gao)輸(shu)出(chu)電(dian)(dian)(dian)(dian)流(峰(feng)值(zhi)-5A TO-峰(feng))非(fei)常適用(yong)于(yu)驅(qu)(qu)動(dong)(dong)壓電(dian)(dian)(dian)(dian)元件的高(gao)電(dian)(dian)(dian)(dian)容。TS200/TS250實(shi)現了的1MHz小信號(hao)和(he)(he)(he)(he)70kHz全功率帶寬，是(shi)壓電(dian)(dian)(dian)(dian)放大(da)器(qi)的理(li)(li)想(xiang)選擇.此(ci)外(wai)，這兩種壓電(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)機驅(qu)(qu)動(dong)(dong)器(qi)儀器(qi)還用(yong)于(yu)許多(duo)其他應(ying)用(yong)，例如驅(qu)(qu)動(dong)(dong)電(dian)(dian)(dian)(dian)解(jie)池和(he)(he)(he)(he)電(dian)(dian)(dian)(dian)化學(xue)池、高(gao)速等離子體物理(li)(li)、光開關(guan)和(he)(he)(he)(he)調制(zhi)器(qi)、振動(dong)(dong)控制(zhi)、熱發電(dian)(dian)(dian)(dian)和(he)(he)(he)(he)交流亥姆霍茲(zi)線圈(quan)。TS200和(he)(he)(he)(he)TS250壓電(dian)(dian)(dian)(dian)驅(qu)(qu)動(dong)(dong)放大(da)器(qi)易(yi)于(yu)使用(yong)，它們安裝在堅固的機箱中(zhong)，是(shi)一般實(shi)驗室、工業和(he)(he)(he)(he)科學(xue)、大(da)學(xue)和(he)(he)(he)(he)研發應(ying)用(yong)的理(li)(li)想(xiang)選擇。額定(ding)輸(shu)出(chu)電(dian)(dian)(dian)(dian)流是(shi)通過(guo)大(da)電(dian)(dian)(dian)(dian)壓幅(fu)(fu)值(zhi)進入阻(zu)性負載實(shi)現的。電(dian)(dian)(dian)(dian)流隨(sui)著電(dian)(dian)(dian)(dian)壓幅(fu)(fu)值(zhi)的減小而(er)降低。

2、美(mei)國ACCEL壓電放(fang)大器
①壓(ya)電放大(da)(da)器是驅動大(da)(da)電容(rong)和高頻壓(ya)電器件的(de)理想選擇。壓(ya)電致動器和換能器通常是電容(rong)性的(de)。由(you)于它們的(de)高電容(rong)，它們的(de)阻抗在(zai)高頻下很低。需要一個高電流放大(da)(da)器以超聲波頻率驅動它們。
②例如，高(gao)(gao)頻壓(ya)電(dian)促(cu)動(dong)器電(dian)容(rong)為(wei)3.3uF，所(suo)需(xu)峰值電(dian)壓(ya)為(wei)20V，頻率為(wei)10kHz，所(suo)需(xu)峰值電(dian)流(liu)為(wei)4.14A。需(xu)要非常高(gao)(gao)電(dian)流(liu)的(de)壓(ya)電(dian)驅動(dong)器才能驅動(dong)如此大(da)的(de)電(dian)流(liu)。更(geng)高(gao)(gao)的(de)頻率通常需(xu)要更(geng)高(gao)(gao)的(de)電(dian)流(liu)。
③除(chu)了高(gao)電(dian)(dian)(dian)流，壓電(dian)(dian)(dian)致(zhi)動器還(huan)需(xu)要(yao)高(gao)電(dian)(dian)(dian)壓。它們的工作電(dian)(dian)(dian)壓范圍一般大于10V，高(gao)可達100V或更(geng)高(gao)。大多數信號發生(sheng)(sheng)器(例如(ru)那(nei)些波形發生(sheng)(sheng)器)都(dou)低于5V，但壓電(dian)(dian)(dian)元件需(xu)要(yao)更(geng)高(gao)的電(dian)(dian)(dian)壓。因(yin)此需(xu)要(yao)一個高(gao)電(dian)(dian)(dian)壓和(he)大電(dian)(dian)(dian)流的壓電(dian)(dian)(dian)放大器來(lai)驅動它們。
④如上所(suo)述，高頻壓(ya)電(dian)(dian)換能器和傳感器是高電(dian)(dian)容性的。它(ta)的阻(zu)(zu)抗(kang)幾(ji)乎都是無(wu)功(gong)的，沒有真(zhen)正的電(dian)(dian)阻(zu)(zu)。這(zhe)種壓(ya)電(dian)(dian)設備不(bu)會消(xiao)耗實際功(gong)率(lv)。這(zhe)意味著所(suo)有功(gong)率(lv)都在壓(ya)電(dian)(dian)驅(qu)動(dong)器內部(bu)耗散。結果是壓(ya)電(dian)(dian)驅(qu)動(dong)放大器過熱。TS200/TS250可以消(xiao)耗大約45瓦的RMS功(gong)率(lv)。

3、美(mei)國(guo)ACCEL大電流放大器
①大電(dian)流放(fang)大器是實驗室中非常(chang)有用的儀器。這對(dui)于增(zeng)加函數發(fa)生器或(huo)任意波形發(fa)生器的電(dian)流驅動(dong)能力非常(chang)方便。
②許(xu)多(duo)實驗室應(ying)(ying)用需要(yao)大電流放大器來驅(qu)動重負載(zai)。用于應(ying)(ying)用高電流放大器包括驅(qu)動重阻性負載(zai)，驅(qu)動電磁線圈，電化(hua)學反應(ying)(ying)器，壓電換能器，和許(xu)多(duo)其它應(ying)(ying)用。
③傳統的函數發生器或(huo)信(xin)號發生器的輸出阻抗為50歐(ou)姆，它(ta)們針對驅(qu)動50歐(ou)姆的負載進(jin)行了(le)優化(hua)。
④如(ru)果負載阻抗低(di)于50歐(ou)姆或需要更高的電流，則(ze)需要電流放大(da)器(qi)。TS200和TS250大(da)電流放大(da)器(qi)是函數發生器(qi)的配套儀器(qi)。本應(ying)用(yong)筆記將使用(yong)TS200作為示例。

ACCEL放大器