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#1
08-15-2012, 11:21 PM
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Built me a multi-standard mechanical televisor
G'day all.
I recently brought up the topic of mechanical television as I've in recent times have taken a big interest in it. Well after building a few simple working televisors, one being cardboard, one of plywood and a tin can drum televisor, I have decided to make a multi-standard Nipkow disc televisor consisting of 3 spirals of holes (60 line, 32 line and 30 line) and two orientations of scanning, horizontal and vertical. Anyhow been working on it on and off for about a month and have got it up to operational status and it is making pictures on all standards!  There is much to say on the construction of this set, so those who are interested in knowing details on the construction of this set I have posted a thread complete with pictures on the construction of this set in the NBTV forums: http://www.taswegian.com/NBTV/forum/...er=asc&start=0 I have uploaded a 25 part video series of the construction on my set to my YouTube http://www.youtube.com/user/troysvisualarts/videos and have made an uncut telerecording of the set in operation using a super sensitive 1990s Panasonic camcorder http://www.youtube.com/watch?v=qwYiAJMnc8c , the pictures as seen are far from perfect as I didn't drill the holes accurately but nevertheless it's making pictures. Anyways this set is still a work in progress as I will be refining it over time, will have to drill another disc with better accuracy and get some brighter LEDs and make an effective speed control system for the AC motor as I am finger braking the motor's spindle pulley to sync the speed. Here are some pics of my set
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AUSSIE AUSSIE AUSSIE!!!!! OI OI OI!!!!! Last edited by Aussie Bloke; 08-15-2012 at 11:23 PM. Reason: Forgot to add attachments 
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#3
08-16-2012, 01:13 PM
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Quote:
 Unless someone has built something from scratch he has no idea how much effort and work it is to get a picture from a mechanical TV system. Congratulations!  Cliff
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#4
08-20-2012, 12:02 AM
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Very nice!
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Chris Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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#6
08-21-2012, 09:17 AM
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Quote:
 Not a dumb question at all, I wish my set did have 1920s/30s vintage tube circuitry, but nope it's of modern yet simple solid state electronics. The LED light banks and the simple video modulated LED driver circuit that I have screwed on top of the set is all there is of the electronics. As for the AC motor speed control, I used a variac to adjust the speed and for slowing the motor down I simply press the motor's spindle pulley with my finger to brake the motor a bit. So pretty simple setup really.
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AUSSIE AUSSIE AUSSIE!!!!! OI OI OI!!!!!
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#7
08-21-2012, 04:19 PM
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Super!
I don't quite understand the output, looks like you took a picture of the video of the image instead of just taking a picture of the image? (have to wait until I'm home to view the details)
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#8
08-21-2012, 06:00 PM
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Awrite, Troy ! IIRC, they used a scanning disc camera for some reason the 1st couple of times they went to the Moon in '69. Either a scanning disc camera was lighter, or they didn't think a std TV camera would work up there for some reason... Hard to believe that was gettin' on to 50 yrs ago now...
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Benevolent Despot
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#9
08-21-2012, 08:12 PM
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Quote:
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#10
08-21-2012, 09:08 PM
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Quote:
http://www.tvtechnology.com/feature-...evision/202793
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