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Old 03-06-2009, 01:25 AM
hoyahoya7 hoyahoya7 is offline
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Default Why is DC load line different from AC load line?

I know that Q-point is intersection of AC load line and DC load line.

but!
I don't know why DC load line is different from AC load line.

I think that it means difference of resistance value.

WHY???????????

Help me~
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Old 03-06-2009, 01:44 AM
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Papabravo Papabravo is offline
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It is not the resistance, but the AC impedance which is frequency dependent.
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Old 03-06-2009, 02:51 AM
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hgmjr hgmjr is offline
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To echo what papabravo has stated, a device that exhibits an ac load-line in addition to a dc load-line possesses a load impedance that is not purely resistive.

hgmjr
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