3 Dec
2009
3 Dec
'09
6:55 p.m.
On Thu, Dec 03, 2009 at 10:29:54PM +0000, Folderol wrote:
As promised, PDF attached.
Mmmm. Just 1 picofarad of stray capacitance on the switch
and wiring, in parallel with 9M, will create a filter with
its 3 dB frequency in the audio band. And 1 pf is really
nothing, expect more.
This will lead to gross errors at anything but the
lowest frequencies.
Is there any reason why an audio level meter should
have such a high input impedance ?
Ciao,
--
FA
Wie der Mond heute Nacht aussieht !
Ist es nicht ein seltsames Bild ?