dumb Theory problem, (eternal september)

[Martin Griffith]

Ok, just been LTspiceing something (+added garlic), a smps, and done a
quick FFT on the o/p, and the plot went down to -300dB.


Shouldn't it stop at -273.16dB?


Martin

 

[Tim Williams]

Ok, just been LTspiceing something (+added garlic), a smps, and done a
quick FFT on the o/p, and the plot went down to -300dB.


Shouldn't it stop at -273.16dB?

Gnaw, it should stop at -24.364171. But who's counting...

Tim

 

[John Devereux]

Ok, just been LTspiceing something (+added garlic), a smps, and done a
quick FFT on the o/p, and the plot went down to -300dB.


Shouldn't it stop at -273.16dB?

What's the log of zero?

 

[Vladimir Vassilevsky]

What's the log of zero?

log(0) = 0xFFFFFFFF (NAN).

VLV

 

[Robert Baer]

What's the log of zero?

Undefined.

 

[Fred Bartoli]

Le Tue, 25 Sep 2007 23:12:37 -0700, Robert Baer a écrit:

Undefined.

The tie breaker is:
for which value of Undefined does Exp(Log(Undefined)) equal zero?

 

[Robert Baer]

Le Tue, 25 Sep 2007 23:12:37 -0700, Robert Baer a écrit:




The tie breaker is:
for which value of Undefined does Exp(Log(Undefined)) equal zero?

Sorry was not clear; *mathematically* the answer is not defined.
So the answer to your question is *no* value.