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Recent content by EdProj

  1. EdProj

    20 pole 2 throw

    Thanks for the good idea VE1BLL but I want to make a product out of this so I would need to have a large source that's easily available.
  2. EdProj

    20 pole 2 throw

    What I want is a box where I can put 3 groups of 4 rs485 plugs, 2 inputs and 1 output. Since the rs485 is a pair I need 4x2=8 for each port, then 3 ports, so I actually need 24 poles. Then with this box I have 2 sources feeding the the box and I can switch between each.
  3. EdProj

    20 pole 2 throw

    A good idea to use power on the cable, but the cable only has signals from RS485 chips. Don't know if you can take power from that without attenuating the signal?
  4. EdProj

    20 pole 2 throw

    Thanks for the idea but I can't have power in the box, so I can't use relays to operate other switches.
  5. EdProj

    20 pole 2 throw

    Hello All, I'm making an A-B switch (so I can switch between channel A and B) but I need the switch to have 20 poles. Do any of you know a company that make these? I found this one so far but the wafer switch seems weak. http://www.lorlin.co.uk/m.htm Thanks.
  6. EdProj

    low modulus?

    I'm looking at thermal material and it advertises a 'low modulus'. I read that the modulud of elasticity is the amout of force required to stretch a material, but in this case I think it's the amount of force to compress a material, because the more it is compressed, ie the thinner it is, the...
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