: Chris wrote:
: > Chris wrote:
: >> I would like to use two momentary switches to turn a motor
: >> or counter clockwise depending on which switch is pushed.
: >> I can not figure it out though. Since the momentary switches I have
: >> are spst, I would think I would need to use a toggle of some type
: >> change polarity.
: >> How do you do this?
: >> Thanks
: >> Chris
: > Well I guess I am going to go with a dpdt momentary switch. Really
: > not want to, but it seems the easiest way to go.
: > Another question. Does any one know of a decent electronic supply
: > in the Norfolk, Portsmouth, Virginia area. I am in N.E. North
: > and we do not have anything except for a "Radio Shack" and they do
: > have much.
: > Thanks
: > Chris
: Well, Chris, such places are getting to be as rare as chicken
: If you can't find 'em in the Yellow Pages, there aren't any. :-(
: Radio Shack is a skinny ghost of its former glorious elf, but is still
: your best bet (at least within reasonable driving distance.)
: Check out the local auto recyclers. It might be possible to use the
: momentary switches used for power windows -- I don't know if they're
: DPDT, but it's worth a try.
: wolf k.
Or you could use a dual polarity power supply and hook one switch to the
positive side and the other to the negative. It's easy enough to build
one with a center tapped secondary transformer if you can find one
Also, Mouser http://www.mouser.com and Digi-Key http://www.digikey.com
are our friends when it comes to electronic stuff since Radio Shack
tuned into Circuit City-mini (and look what happened to them!).