13 Dollars for an electronic switch ??

Tony Clark clark at andrews.edu
Wed Aug 13 17:02:24 CEST 1997


> I don't understand the adversity towards a good old relay. Most people 
> view relays in the same bucket as inductors
> and vaccuum tubes, but with "today's technology", you can get DPDT or 
> 4PDT relays the size of 18 pin DIPS that
> use gold over palladium contacts, can be driven DIRECTLY from HC 
> logic, and cost about $3.00. See the offerings
> from Omron, Aromat, and NEC. Oh, and 0.025 ohms max on resistance, 
> -120dB SNR, 35 volts pk-pk signals. 
 
   Sure, this is a valid way to go.  I played with a 4PDT once when I was 
prototyping a product a while back, but determined that size was a major 
factor in not using it.  That and the price on them jumped from $7.00 a 
piece to $16!  I forget now who manufactured it.
   Really, though, I wonder where he's getting his DG201's from?  I can 
get them for $3 to $5.  Even better than the DG201 is the DG444 (I just 
checked the specs).  I have a few of these that I have been playing with 
(the DG444 that is) and they work very well.  These go for $2.05, so in 
my opinion, this is a much better solution.
   Hope this helps.

   Tony

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I can't drive (my Moog) 55!
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Tony Clark -- clark at andrews.edu 
http://aupe.phys.andrews.edu/~clark
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