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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Re: The purpose of my advice posted by blahblah on June 17, 2004 at 05:55:20:
You continue to confuse filter design for ripple suppression with the circuit design treatment of the power rail.Even a well-designed differential amplifier has some mismatch in its components and will draw time-varying current from the power supply. The power supply should be designed to look like a battery at all frequencies the amplifier must deliver. This means, for the purpose of circuit analysis, that the power supply is to be replaced by an ac short-circuit. The actual circuit will fall short of its analytical ideal if the power supply does not resemble a short-circuit within the passband. Hence the need for better electrolytic performance, or bypassing.
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Follow Ups
- See Horowitz and Hill, page 45 and following. - Al Sekela 21:59:58 06/17/04 (3)
- Re: See Horowitz and Hill, page 45 and following. - Sampsa 22:16:16 06/17/04 (2)
- Re: See Horowitz and Hill, page 45 and following. - Werner 22:34:58 06/17/04 (1)
- Agree! Excellent advice! - Al Sekela 18:50:50 06/18/04 (0)
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