Buzz coil CRT

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Buzz coil CRT

Postby McGee2021 » Tue Nov 24, 2015 11:52 am

I have a very large collection of buzz coils, which would have been used in early automobiles for there ignition. I salvaged a CRT from a b+w tv, and decided to experiment.

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Setup
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Image
(864.21 KiB) Not downloaded yet

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Coil
(1.14 MiB) Not downloaded yet
John Logie Baird was obviously the man who sowed the seeds but did not reap the harvest.
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Re: Buzz coil CRT

Postby dominicbeesley » Tue Nov 24, 2015 11:58 pm

Looks like you've got the start of a televisor there! Next thing feed a signal in to the cathode or grid and then find some way of making the time bases. At one point I started on a meccano CRT + mechanically moved magnets idea...
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Re: Buzz coil CRT

Postby Klaas Robers » Thu Nov 26, 2015 2:53 am

The buzzing ignition coils are from the Ford model T. You can make a simple spark transmitter from them. However these experiments are also nice to do. But this is pulsed alternating current, not useful for a CRT picture tube. This tube needs, I guess, 10 kV DC for the accelerator high voltage.

Has the tube a recognition code? When you search on it you might find the characteristic voltages.
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Re: Buzz coil CRT

Postby McGee2021 » Thu Nov 26, 2015 4:08 am

Klaas Robers wrote:The buzzing ignition coils are from the Ford model T. You can make a simple spark transmitter from them. However these experiments are also nice to do. But this is pulsed alternating current, not useful for a CRT picture tube. This tube needs, I guess, 10 kV DC for the accelerator high voltage.

Has the tube a recognition code? When you search on it you might find the characteristic voltages.


The coil did manage to make a small spot on the screen, because I didn't have the electro magnets on. They were used in most early cars, up to the 1930s. My collection includes about 150, most of them from old family cars. I typed in the recognition code on the web and couldn't find anything. I also have made around three spark transmitters, and some of the could I have require an AC input and output.
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Re: Buzz coil CRT

Postby jjester6000 » Wed Aug 15, 2018 4:54 am

McGee2021 wrote:I have a very large collection of buzz coils, which would have been used in early automobiles for there ignition. I salvaged a CRT from a b+w tv, and decided to experiment.

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You just gave me a CAZY idea?

Recently, I have been working on my own unsealed form of the Image Dissector Tube that I call the Video Crudiscope Tube.
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It is not fully working yet, but I have gotton it to respond to light which is kind of amazing for something made of mostly JB Weld and wood. Instead of using a vacuum pump, what if I could use one of the vacuum lines from comming off the GM 250 straight 6 Stovebolt from my 1974 GMC C1500 Pickup Truck?
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I could wire the tube to the ignition coil parallel to the distributer cap, and also maybe pull a plug wire and run one axis of deflection off the distributer. Of course the engine would run loke absolute garbage, but this is so crazy it might just work!
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Re: Buzz coil CRT

Postby FlyMario » Wed Aug 15, 2018 6:12 am

I nearly just shot lemonade out my nose. Mechanically moved magnets on a CRT? Say what? All I can picture is legos moving magnets back and forth to make the electron beam move H and V.

Too bad that post is from 2015. I would love to see that.
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