[GreenKeys] Hughes Printing Telegraph

[W2HX]

John, and list.

The governor (regulator tower) is purely mechanical. The brake is also
mechanical just puts pressure on the flywheel until it stops.  There is a
lot to learn about this. There are a million and one adjustments. Although I
got the motor running, I think the next level of functionality will be an
order of magnitude more complex!

73 Eugene W2HX


-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of John Nagle
Sent: Tuesday, July 19, 2011 5:03 PM
To: greenkeys at mailman.qth.net
Subject: Re: [GreenKeys] Hughes Printing Telegraph

On 7/19/2011 12:56 PM, greenkeys-request at mailman.qth.net wrote:

    Is the governor purely a drag device, or can it interrupt motor
power for speed control?  The later Phelps printing telegraph (1885 or
so) used purely electrical speed control, cutting a resistor in and
out of circuit, just like governed Teletype motors.
>
> Fun stuff! So far we have the unit generating a pulse when a key is
pressed.
> But beyond that, we're still learning!

    You're almost there!  You should get to loopback mode soon.  Then
what?  Build a computer interface so it has something to talk to?
That shouldn't be too hard.  An Arduno, a loop power supply, and some
optoisolators should do it.

						John Nagle
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