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

[Richard Knoppow]

    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.

On 2/27/2016 8:18 AM, Ed Sharpe Archivist for SMECC via GreenKeys wrote:
> Ok   got it!
> I  figured the    incandescent  light  would not on off on off  to  
> well at  60 Hz....
> Ed!
> In a message dated 2/27/2016 4:45:32 A.M. US Mountain Standard Time, 
> ka2ivy at verizon.net writes:
>
>
>
>     The light is to shine across the paint stripes  so they can be
>     viewed through the shutter on the tuning fork when setting the
>     motor speed. When it's done right, the strobe effect is easy to
>     see. There isn't much noticable flicker when the bulb is lit by 60
>     cycles, on 25 cycles the flicker is so far off from the strobe
>     speed that the only effect is the image of the stripes growing
>     brighter and dimming.  At the correct speeed, they will stand
>     still like they do on 60 cycles or DC.
>
>            Bruce Gentry, KA2IVY
>
>     On 2/27/16 2:54 AM, Ed Sharpe Archivist for SMECC via GreenKeys wrote:
>>     *teletype motor with the /'night light'/ on it! *
>>     ebay  141913812722  -  of  course they say it  is ... 'stream
>>     punk..<<grin!>>
>>
>>     But  riddle me this.... does the incandescent  lamp  really  
>>     give a 60 hz  strobe effect
>>      so you can time this or is the  'night light'  just to  light a
>>     tuning fork?
>>     Added  question is this sitting on a  shipping board or!?!?!?!
>>      What  mode  TTY  should this  be in!?
>>     Ed Sharpe archivist  for SMECC www.smecc.org
>>
>>
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>
>
>
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-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL

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