[GreenKeys] teletype motor with the 'night light' on it!

[Richard Knoppow]

    Well, different people have different experience, while a neon lamp 
certainly makes a sharper pattern I've seen the strobe effect with low 
wattage incandenscent lamps. Its dim but there.

On 2/27/2016 9:43 AM, Ralph Mowery wrote:
> At 60 Hz there is not enough flicker from the incandescent lamp to 
> work a strobe disk.  At least not any modern lamps.  If there is any 
> flicker then there would not be any need for the tuning fork/shutter 
> to set the speed of the governed motors.
> I have not been around any 25 HZ power, but have heard that there is 
> often enough flicker in those lights to cause many people problems.
> I still have one of the turn table disks around and have used it some 
> way in the past to check the speeds. It takes a neon bulb or some 
> other gas filled tube operating off the 60 Hz house current to make it 
> work.  It will not work under any standard low wattage incandescent lamp.
>
>     ----- Original Message -----
>     *From:* Richard Knoppow <mailto:1oldlens1 at ix.netcom.com>
>     *To:* greenkeys at mailman.qth.net <mailto:greenkeys at mailman.qth.net>
>     *Sent:* Saturday, February 27, 2016 11:28 AM
>     *Subject:* Re: [GreenKeys] teletype motor with the 'night light'
>     on it!
>
>        At 60Hz there is enough flicker from a low wattage incandescent
>     lamp to work a strobe disc, for instance the little discs once
>     sold for checking phonograph turntable speed.
>        BTW, when I was a kid my parents visited the Canadian side of
>     Niagra Falls, the power there was 25Hz, I could never get quite
>     used to the flicker.
>
>
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL

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