Tweakers' Asylum

See Horowitz and Hill, page 45 and following.

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Al Sekela

(A)

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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Re: See Horowitz and Hill, page 45 and following. - Sampsa 22:16:16 06/17/04 (2)
Al, is that Horowitz and Hill a good book if I want to understand amps, power supplies, and CD analog outputs??
- Re: See Horowitz and Hill, page 45 and following. - Werner 22:34:58 06/17/04 (1)
  The HH book is brilliant, both for the beginner and for the advanced EE who needs an easy reference work.
  Get it, study the basics of transistors, opamps, and power supplies, and only then proceed to understanding audio electronics.
  - Agree! Excellent advice! - Al Sekela 18:50:50 06/18/04 (0)
    The book is expensive as far as electronics books go, but the clarity of the explanations makes it worth every penny!

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