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請問圖中部後級紅圈個線圈同粒電阻有什麼作用?

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t.kaiming 發表於 2011-1-8 18:11:49 | 顯示全部樓層 |閱讀模式
THANK YOU!

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kk_ho 發表於 2011-1-8 18:28:41 | 顯示全部樓層
Output low pass filter, 防止超高頻自激振盪。
 樓主| t.kaiming 發表於 2011-1-9 16:54:39 | 顯示全部樓層
會唔會影響音色?
hcheung 發表於 2011-1-14 18:00:26 | 顯示全部樓層
教科書正解(Introduction to Electroacoustics and Audio Amplifier Design, W. Marshall Leach Jr):
"The voice-coil impedance of a loudspeaker driver is not purely resistive. This can have a major perturbation
on the performance of crossover networks...A matching network, sometimes called a Zobel network, between the crossover network and the voice-coil terminals of a driver can be used to cause the effective load on the crossover network to be resistive."

其實Zobel network 重有一隻電容...
kk_ho 發表於 2011-1-16 15:36:33 | 顯示全部樓層
Yes, inductor inseries of output, then R+C // to the output terminal.

You can found a cap and resistor locate near of the inductor. (Cap is yellow color)
alicechan11 發表於 2016-11-30 22:48:25 | 顯示全部樓層
本帖最後由 alicechan11 於 2017-8-2 16:47 編輯

thanks for sharing市場推廣服務
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