[sdiy] rotary switches in general

[Harry Bissell Jr]

Howdy MarkVs

One difference is the rotational life. Some cheap-o
switches only last for 100s to low 1000s of
revolutions.

Another difference is make/break current and/or
carry current. Are you going to switch power, or
"dry contact" (audio) levels ?

Mechanical feel might be different.  Mounting and
construction differ.

Of course the right switch is the one that fits YOUR 
needs.  If you use a device once a week, you might
find that a life of 10,000 operations might last you
twenty years...

I also consider "can you get replacements" ??? A long
standing design might be a good idea, but in this day
of the b at st@rd MBA from HELL (if thats not
redundant...) there is no guarantee that even a
classic design will be produced tomorrow !!!

btw R3 (2.2M) is redundant...  C4 and R4 set the input
frequency response.  <teehee>

H^) harry



--- mark s <djarum11 at mindspring.com> wrote:

> 
> would someone care to elaborate on the differences
> between a $1.50 rotary 
> switch and a $10-$20 one? (USD)  is this a
> 'hearable' difference or a 
> mechanical one or both ??
> 
> mark scetta
> 
>