[...]
> Those looking for primitive designs can have a look at
> TTLtoRS232.ps.gz, a simple converter to convert TTL-level PPS pulses
> to RS232 level (yet untested, but built). Comments appreciated.
Please do not build this device, because I have swapped pins 6 & 7 of
the OpAmp. In addition the original designer suspects that an
additional resistor is missing. I'll update the drawing as soon as I
know more.
>
> Regards,
> Ulrich Windl
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