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Recent content by manaboutdog

  1. M

    How do I determine the current rating for a pulse transformer?

    Hi there, I'm intending to use a pulse transformer (1:1:1) to drive a reverse parallel Thyristor configuration. I need to be able to supply ~1.5A to the gate of the thyristor, but most of the specs I've seen do not directly quote a current rating. I'd like to use as small a transformer as...
  2. M

    DC power and Open Collector signal over 300m of wire, will this be ok?

    Ah right, I see, I was wondering what would be the point isolating the interrupt flag only, but the points you make are very valid.
  3. M

    DC power and Open Collector signal over 300m of wire, will this be ok?

    Optocoupler? Thanks guys, do you mean using a fiber optic cable between the 2 locations?
  4. M

    DC power and Open Collector signal over 300m of wire, will this be ok?

    Hi There, I'm looking at doing something where I'll have a remote photoelectric switch with an NPN open collector output situated ~300m from my power source (18Vdc) and microcontroller. I'm not sure the best way to go about this and was wondering if the following approach would be ok? I'm...
  5. M

    PADS Logic - Any way to import text from file to place on schematic page?

    Hi There, I tried searching for an answer to this but couldn't find anything, it's a pretty straight forward thing I would have thought, but I can't figure a way to do it. I am trying to place a list of release notes on a schematic page and rather than spend ages placing them all in line by...
  6. M

    [SOLVED] Product Failing Radiated Immunity

    design for radiated immunity Hi There, I have a product that has undergone the full suite of EMC tests and the only point at which it has an issue is during radiated immunity @ 805Mhz, the product requires a reset after being subjected to this frequency. This product has a Zigbee radio IC...

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