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surianova
Joined: 01 Sep 2004
Posts: 399
Helped: 20
Location: ASIA
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 30 Sep 2004 9:27 voltage or current feedback |
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How true is this simple definition?
- If the feedback signal goes zero if you short the output, (output voltage goes zero) it is voltage feedback;
- If the feedback signal goes to zero if the load is disconnected (output current goes zero) it is current feedback.
Suria
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flatulent
Joined: 19 Jul 2002
Posts: 4856
Helped: 292
Location: Middle Earth
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| 30 Sep 2004 14:52 Re: voltage or current feedback |
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| Yes. Another way to remember is to see which parameter in the output is sampled by the feedback network. As additional information, that parameter will be kept constant by the feedback system. This influences the circuit output impedance. If the voltage is sampled, it will be kept constant which will make the circuit output impedance smaller than without feedback.
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sunking
Joined: 25 May 2004
Posts: 914
Helped: 46
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| 02 Oct 2004 8:13 Re: voltage or current feedback |
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| Yes, the series is voltage feedback, and the parell is current feedback.
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layes
Joined: 27 Sep 2004
Posts: 57
Helped: 2
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| 11 Oct 2004 5:17 Re: voltage or current feedback |
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shunt -series
so on and so force
forget
voltage or current
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