Televisor 3 - Mechanical Television

[chiffmonkey]

The funny part is this Digital TV, not Analogue.

[ffgamerboy9]

wow never saw a TV like that

[TheMike16112]

That animation looks creepy

[1marcelfilms]

can you conect a ps3 to it?

[abgersaurus]

har du selv lavet det? eller er det et rigtigt "vintage" fjernsyn? :D

[televisionbb]

@abgersaurus Jeg har selv bygget det ;O) Apparatet her og adaptoren stod færdig ca. 1999.

[abgersaurus]

@televisionbb awesome!

[PolyesterMoustache]

the contrast on his face reminds me of gif images

[spottydog4477]

.mark my words this is the devils work.........

[televisionbb]

@spottydog4477 No it is the start of a billion dollar industry.

[bandet888]

@spottydog4477 How is this the devils work?

[mmr3776]

It is wonderful. 

[howellfilm]

Wow! Excellent work! Where can i find a schematic to build my own televisor? I started repairing TVs in my basement when I was 10 (back in '65) and still love to spend time with early TV equipment tinkering around with these wonderful gizmos. I envy you and what you've done! Keep it up! So many people haven't a clue about early TV, much less knowing that you can actually store video on a 78 record! Good luck with your search! Have you ever contacted the broadcast museums in LA and Chicago?

[joshie702]

will it blend

[alejo333]

I congratulate you for the work!

[picaticatara]

thats ghetto like shit

[AliasUndercover]

Dear Lord! You built one of these things? That's crazy! and awesome...

[davidls11]

Does it get HBO?

[peterann1]

I'm looking for a link to the first 78rpm record video player. It had a little ground glass screen relecting the Crater bulb from a prism. I saw one once. I made a promise to find documentation for a museum. I did find Farnsworths old CRTs in some obscure California museum. Dayton Rules. Shep was WOR radio god. Peter, WB2SGT ck 73

[televisionbb]

@peterann1 Sorry for this late reply. There is a picture of the 78rpm record video player at Don McLeans homepage tvdawn(dot)com/tvprint(dot)htm

Best regards from Denmark, Jan

[cazzozzo]

WOW!!!!

[bandet888]

I wonder if the projection TV's using the color wheel uses the same principal as the flywheel in a mechanical TV that the light has to strobe through the color wheel similar to the way the light strobes through the flywheel of a mechanical TV.

[Films4You]

Well done

[MadManMarkAu]

I'd like to see you make a video on your PAL 625 -> Baird 32 converter you've got there. How it works and the differences between the formats (polarity, scan direction/orientation, frame rate etc...) It must be awefully complicated to convert between such disparate formats.

[BARONSCHWARZWALD]

Does this use a cathode ray tube and if so how do you keep it from producing x-rays ?

[televisionbb]

@BARONSCHWARZWALD No, there is no cathode ray tube here. The scanning is done mechanical with a Nipkow disc. The picture signal modulates a cluster of white ultra high bright diodes. In the old days this was done with a neon tube.

[killcar5nbike2]

@BARONSCHWARZWALD

As stated this is mechanical Nipkow disc (JLB style). If you keep HT under 20kv you stay out of Xray territory.

[BARONSCHWARZWALD]

where can i find instructions to build this

[televisionbb]

@BARONSCHWARZWALD At the Narrow Band Television Association homepage. Search for nbtv

[GenghisKhan44]

So that's what the dude in the Queen's mirror does in his free time...

[televisionbb]

@GenghisKhan44 Well yes - sometimes - and it's not a mirror :O)

[GenghisKhan44]

@televisionbb It was a Snow White reference. You know, the one the Queen from that story asks "Mirror mirror on the wall, who is the fairest of them all?"

[HikaruYamamoto]

why is this creepy to me?

[televisionbb]

@HikaruYamamotoWhy the start of a billion dollar industry is creepy to you?? Do you want to answer it yourself??

[HikaruYamamoto]

@televisionbb uh no... just the film is.

[newchihuahua]

i saw this first on modern marvels, they had an episode called "failed inventions". the first failure was this TV.

[tetrodobeam]

GREAT!

[AngryVGFur]

I'm thinking about building one of these. I'm curious, what is the function of the white inner disk at 0:27 ?

[televisionbb]

@AngryVGFur The small white disc is for syncronisation. It rotates on the same motor shaft as the Nipkow disc and has 32 slots - the number of lines in the picture. A LED/photodiode arrangement makes 32 impulses/picture of this. An IC4046 compares these pulses to the syncronisation pulses of the video signal and automatically adjusts the motor speed.

[organfairy]

Fascinerende. Jeg kan huske i mine teenage-år at jeg rodede med lysbilledshows og smalfilm - selvom det var aldeles forældet allerede dengang. Det må være det samme der er tilfældet her.

[supreme60s]

This is Amazing! i Went to a Television Museum up here in Ohio during my High school Year. Great Channel

[boyhey1]

fantastic work

[cuteycindyhoney]

This is a truly fascinating piece of history brought back to life! How long did it take you to build your Televisor III?

[televisionbb]

The Televisor and PAL625-converter seen here took me about 1 year. It was build i 1999/2000.

[cuteycindyhoney]

I am being totally honest when I say it's truly impressive! Very good work, and thanks for letting us all see your hard work.

[AnimePlanet7]

What would be cool is to spin a drum (motorized) with tiny mirrors (different angles) and bounce a green laser off of it onto a wall. The video signals could enter (modulate) a power transistor circuit that powers the laser and...voila...projection tv...LOL!! Wow you did an excellent job, keep up the good work!! When I was a kid I loved mechanical tv I'm now 47...and I still love it!!

[ildofer]

ебать

[picaticatara]

It would be cool if plastic discs could store that video.

[boxa888]

makes you wonder about dvd and cd drives, its just a braid disc with millions of pits just like this 100 yrs old device lol. its really neat! the computer disc was really invented 100 yrs ago! lol

[tgv150]

@picaticatara; check out Phonovision... ; )

[Richardddoobies]

AMAZING! Not only have you built a mechanical television, but a signal converter that accepts DVD video?

Simply amazing.

[televisionbb]

Thank you for your interest. The converter accepts any PAL 625 video signal.

[vorkev1]

wow thats clear most of theat type of tvs or telivisors are not that clear

[mogul1265]

Its like hes trapped. Creepy. Thanks for the upload.

[lshurr]

Fascinating. Thank you for the views of your apparatus. I've read "The History of Television, 1880 to 1941" (1985) which has illustrations and pictures but nothing in print can show what your video does about Nipkow disc TV. I gather that the dark bars in the image are due to the differing scan rates of the image and your video camera when you're not using "slow shutter." Is the flicker characteristic of the images viewed directly or is it simply another scanning artifact?

[televisionbb]

You are quite right about the dark bars. They are only due to different scan rates. I use the slow shutter effect to give a more realistic impression of the picture. Viewed directly you will see no bars but the whole image flickers with the 12 1/2 Hz picture frequency. I own a copy of the Abramson book myself. It is quite a remarkable collection of television patents and is (without total succes) perhaps the first book on the history of televison trying to be impartial.

[tkoizumi]

Wow I finally know how this works. Thanks for showing me this. Other video only show just brief history as to who and when it was made. If you think about it, this is a very sophisticated technology! using the light and darkness of a picture and break them up into vertical lines then reassemble them into other side using a circular plate. Wow it's amazing!

[Bongobobby9]

awesome - i read about John Baird when i was a child. then i imagined building an apparatus like yours. might still give it a try, i'm 32 years old now. and not until today did i research the baird televisor on the web.

[televisionbb]

It's never too late :O)

I recommend the homepage of the Narrow-bandwidth Television Association. There's a handbook online, a very interesting forum and links to other pages on the internet.

[MrUnseen]

fascinating technology.

[googleapolloIII]

How did you build your 625 to 32 line converter?

[televisionbb]

The converter is a counter picking out every 4. line in every 4. picture (=12 1/2 hz picture frequency). These lines are divided into 96 'points' and the middle 32 of these are for 64 lines (4, 8, 12,...256) stored in a RAM - this giving a picture in the RAM of 32x64 points. 2 RAM circuits (32x64=2048K) are alternating between writing from the PAL signal to one RAM at 96x15625Hz=1.5MHz and reading from the other RAM at 32x70x12 1/2 Hz =28000Hz. 6 points (70-64) are used for syncronisation.

[ufoengines]

Picture and audio too! Pretty COOL! Any plans to try a mirror drum monitor?

[televisionbb]

I build a mirror drum for 30 lines in 1993 or 1994. Only one photo existes of it. Adjusting it was a nightmare, and it was extremly heavy. Resently I read about front silvered plastic on the NBTV forum used by 'bigscreen' from Belgium. This would make the device much lighter.