[sdiy] Two unrelated questions: Switch loads, debouncing

[flightofharmony]

Comments inline...

> > 1) Most switches are specified for resistive loads only, as
> > capacitive loads can quickly weld or vaporize the contacts. 
> > The question: where is the  general threshold for this?
> 
> Generally all you need to do is make sure the reactive surge current
> is less than the switch's rating. You can guesstimate the surge
> current from first principles, and add a current limiting resistor to
> make sure it's never exceeded.

Sounds pretty good but, in the timing capacitor example, wouldn't 
the limiting resistor affect the timing circuit?

> > 2) This popped into my head the other day: Is there any reason to
> > add switch debouncing in entirely analog circuits?
> 
> Depends on the circuit. If you're switching a signal path, then yes,
> you want to add some debouncing/filtering to avoid crackles and clicks.
> 
> Richard

Good point. 
This reminds me: Would using a Make-Before-Break (MBB, or shorting) 
switch be a valid alternative in both of the above questions?

Best regards, 

~flight
flight at flightofharmony.com
http://www.flightofharmony.com