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Fabio
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加入日期: Jun 2001
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引用:
作者大道行
抱歉我又把這篇挖出來了

最近也入手了兩顆

看一下簡化的等效電路圖,這顆Power OP似乎是電流回授放大器

但從Slew Rate來看並沒有電流回授的特徵XD

輸出沒有做射級隨耦器,輸出阻抗應該不低

與其拿來當小綜擴,拿來搞個耳擴應該比較適合

主要是電壓範圍太低,但電流輸出已經很夠用了

大大或許可以試做看看
我目前用+-16.5V推8歐姆的喇叭,還不難聽,心臟大顆一點給他加到+-18更好
音量算夠吵到別人了

可以從DATASHEET裡面這幾句描述知道點訊息嗎?
引用:
The PA02 and PA02A are wideband, high output current
operational amplifiers designed to drive resistive, inductive
and capacitive loads. Their complementary “collector output”
stage can swing close to the supply rails and is protected
against inductive kickback. For optimum linearity, the output
stage is biased for class A/B operation. The safe operating
area (SOA) can be observed for all operating conditions by
selection of user programmable, current limiting resistors
(down to 10mA). Both amplifiers are internally compensated
but are not recommended for use as unity gain followers
舊 2013-07-15, 01:34 PM #63
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