AVR-Chat

Dear Zack Widup 

  the idea is really good if the meter has some quality to it, some of the cheaper ones I have (ok to check a voltage etc) used may not work well enough i feel.....
  The AND gate version should work at speeds far in excess of the human finger speeds.....but is more work to make......I would still use your idea first!!!

  Many thanks

  Andy
  ---------------------------------------
  Another way to go about this is just to connect a digital multimeter with a
  continuity "beep" function across the outer switch terminals and flip the
  switch back and forth. If you don't hear a "beep" it's break before make.

  I have a quantity of DPDT on-off-pressure*on (in one position the switch
  stays on and in the opposite position when you release pressure on it, it
  goes back to center). They are of unknown origin; I believe I got them from
  All Electronics. They are all break-before-make.

  Zack

  On Sat, Jan 9, 2010 at 8:21 PM, MoreOrLess <Brewskister@gmail.com> wrote:

  >
  >
  >
  >
  > --- In AVR-Chat@yahoogroups.com <AVR-Chat%40yahoogroups.com>, "Steve
  > Hodge" <steve@...> wrote:
  > >
  > > Thanks, Mike. The part is a DPDT on-on toggle, Mountain Switch p/n
  > > 108-0043-EVX, which is also the Mouser p/n. I have the odd feeling that
  > > Mountain Switch and Mouser are related, not just by identical p/n's but
  > also
  > > by the fact that a google on the former always leads to the latter.
  > >
  > >
  > >
  > > Steve
  > >
  >
  > I have taken switches like that apart and all have had an arm with contacts
  > on both sides goes back and forth, to and fro, with the movement of the bat
  > handle. Not being able to be two places at the same time... You get the
  > picture.
  >
  > That said, if you took a low current fuse, say 1/10 or 1/100 amp job and
  > connected a battery post through the fuse and to one of the outside
  > terminals of the switch, then the other outside terminal of the switch back
  > to the other post of the battery.
  >
  > Now flipped the switch back and forth, how many times, pick a number, 1, 10
  > or 100, the fuse will still be good. Two possibilities. One, its break
  > before make. Two, the switch never makes long enough to blow the fuse but
  > that I think is unlikely. The make before break would never be long enough
  > to do any good, so what would be the use.
  >
  > Good luck and don't burn the house down,
  > Mike
  >
  >  
  >


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Greetings from

Andy Mathison

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