push-button on/off switch
Rob
cyborg0 at GlobalEyes.net
Wed Dec 30 04:04:08 CET 1998
Arthur Harrison wrote:
>
> The CD40106BE plus three CD4013BE packages, on the other hand, provide
> six independent bounceless on-off switches with both Q and Qnot outputs.
This sounds like what Im after.. You see, the problem is that I will
have 18 pushbuttons, and it gets kinda hectic doing all the layout for
debouncing each and every switch, and I am trying to keep the parts
count low...
>
> A typical circuit with one section of a CD40106BE and half of a CD4013BE is
> at:
> http://home.att.net/~theremin1/debounce.gif
Going to look at this...
>
> A related circuit, specifically designed for the Big Briar "Etherwave"
> theremin is at:
> http://home.att.net/~theremin1/circuitlibrary/mute.html
hmm..
>
> An often-ignored requirement for reliable switching is the switch contact.
> For low-level
> currents, such as in this application, it is best to use a switch with
> gold-plated contacts
> and a "snap" mechanism,
This is the kind I am using.. the type you see on a lot of gear, like
the buttons on the akai samplers et al... the surface mount tact
switches.. Cheap, but when I look at the extra work needed, I am
starting to wonder if I am not better off with toggles. Perhaps a micro
is a good idea here..
Rob
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