[GreenKeys] Teletype Model 15 power Q's...

[drlegendre .]

"Not quite true.  The bit error rate with a single machine with the loop
running on 12 VDC or even 24 VDC is quite large."

"Have you tried running a 15 on the low voltages like 12 or 24 volts ?  The
one I have will give all kinds of errors at that voltage. "

"12-24 volts is a myth."

If it's mythical - and I won't argue that it's not - then it's certainly
oft-repeated. In fact, I'm fairly certain that I received info to that
extent from this very same list, around one year ago, while working to get
my own M15 on-line with my C-64 setup & Aetheric (John Nagle's) converter.

Unless that info came from classiccmp.. and should the need arise, feel
free to blame them - they're a bunch of pikers anyway. ;-)

(Please excuse me, I'm on a bit of an election-night high.)

On Tue, Nov 8, 2016 at 11:02 PM, Jeffrey D Angus <jdangus at att.net> wrote:

> On 11/8/2016 10:54 PM, Ralph Mowery wrote:
>
> Have you tried running a 15 on the low voltages like 12 or 24 volts ? The
> one I have
> will give all kinds of errors at that voltage.  Seems that around 50 or
> more volts is
> where it seems to print without errors.
>
> 12-24 volts is a myth.
> Little things like inductance and di/dt require a minimum of 50 volts.
> Even at 50 volts you have to retard the range finder (sample later in
> the data) to avoid problems with the slow mechanical rise time on the
> selector magnets.
>
> Kind of like the old joke: "186,000 mile per second. It's not just a good
> idea, it's the law."
>
>
>
> --
> Jeff-1.0
> wa6fwihttp://www.foxsmercantile.com
>
>
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