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  1. Sandman101

    Simple Circuit Concept

    Hey all, It's been a long time since I've done discrete electronics and I'm in need of a discrete solution (with logic gates): I have a switch, that once opened, a circuit is "turned on" and runs. If the switch closes, it cannot affect the system. Sorta like an alarm .. when you break in...
  2. Sandman101

    DIO Protection

    Greetings, I have a design question at hand: I have a group of DIO lines, attached to an FPGA, running +3.3V signal levels. Obviously I would like to drive the signals with buffers, which is simple enough. The problem is the outside world of this device has the probability of pulling the DIO...
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