[LAD] May I asked something OT?

[Gordon JC Pearce]

On Mon, 2010-07-19 at 14:45 +0200, Ralf Mardorf wrote:

> http://www.instructables.com/image/FC6ZZ0XF8JUW8E8/What-is-a-killswitch.jpg
> 
> This is what I call short circuit. It won't harm a pre-amp doing it by a
> potentiometer, but I wonder if doing it fast, again and again by a
> switch won't cause impulses, when the short circuit will be released
> again? Perhaps I do error in reasoning and it's quite save.

Yes, it's entirely safe.  At that stage you've got a few tens of
millivolts of signal at best, across about a 1k impedance source.

Gordon MM0YEQ