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Pulse transformers and serial data

Discussion in 'Misc Electronics' started by [email protected], Jul 25, 2006.

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  1. Guest

    Hi Group,
    I'm looking for a relatively inexpensive way to transmit information
    from one mains switching power supply to up to two other mains
    switching power supplies a few feet away. The data rate would be 1200
    baud or less. The only catch is the common lines can differ by as much
    as 170V, depending on mode of operation. (The common line on each
    power supply is normally at about -170V with respect to earth ground)
    At first glance, this application screams for an infrared connection,
    but this has been discounted because of a stray wire or an object
    interfering with the signal. So, I have been looking at using pulse
    transformers to fully isolate the wired communications connector from
    the -170V. I'll be sending and receiving information through the
    pulse transformers using Atmel, ATTiny2313 microcontrollers. Several
    companies (Tamura, C&D technologies, etc.) make pulse transformers.
    The issue I'm running into is that I have no idea how to drive a
    pulse transformer or how to receive data from a pulse transformer.
    Does anyone have any thoughts on this? (Application notes where are
    you?)
    Matt Meerian
    www.geocities.com/matt6ft9
     
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