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A while ago, I was querying here about a 7D15 freq counter that was on the fritz. It was a questionable cap and a bad solder joint and the good news is that has been repaired. (There was also some

It sound Like MG Chemicals #847 is the way to go. The smallest size is the 25ml for $27, I will probably never use it again and do not want to invest in it. Any other ideas?.

The good news for this project is that the CRT's in the 57x curve tracers are quite slow by tech standards. The cross over from the 5110 is only a 10 Mhz scope and it is an exact match tube. For the

Oh, that I did that many years ago from a project in (was it radio-electronics?? electronics world?? Not sure that it was popular electronics. That's easy, very easy. tap off the horizontal sync.?

I mean adapting yokes designed for raster, which have very different horizontal and vertical design frequencies. --Toby

Roy Thistle wrote: I've seen a YouTube video where someone makes an oscilloscope from a TV picture tube. It is crude, but it works. https://www.youtube.com/watch?v=aScAZReGQc0 This is the video I'm

Curious.? Unless you need a very different X rate, why rewind the yoke? Harvey

I think that's what Roy meant with 'drive with current instead of voltage'. Rewinding one half of the yoke is necessary anyway, from what I have gathered reading/watching these conversions. --T

That's not how you do it.? What you do is read the current through the deflection coil, compare it to your waveform, and then the difference drives the deflection amplifier.? One classic way yields

There was a board called the VectorVGA that converted XYZ inputs to an VGA display (15 pin D connector output). It had color RGB inputs also so it could be used to replace color vector games (Atari

Yes, they exist, and one mass production use was arcade games. People still modify magnetic tubes for X/Y work (for example the 9" mono displays from some computers) because they're relatively

The Early Television Museum in Hilliard Ohio is likely the last repository of equipment and knowledge to rebuild TV jugs. However, the main problem is obtaining new gun assemblys. There have been

Hi Jeff: Well... you'd be trying to drive an inductor (the deflection field coil, in the CRT yoke.)... and in this case Lenz is no friend to you. I believe I have seen a vector display with magnetic

There are two different kinds of tighten/release mechanisms on collet lathes. The more common kind requires you to stop the lathe and then turn a handwheel on the left end of the hollow drawbar by

There was someone here who was restoring television CRTs. When the electron-gun assemblies became unavailable, he stopped doing it. (It's one thing taking the neck of and re-coating the phosphor: It's

The shimmering I described was called "double traces" and a fix was described here: /g/TekScopes/topic/77914568#175831 by Jack2015, where adjusting the value of R318 eliminates it.

https://www.youtube.com/watch?v=Bw6l9V0jrT8 Shows his collet closer Bruce

ST: not sure of NA price: $ 54 ? ( Euros ? ) manuals, data sheets: https://www.st.com/en/evaluation-tools/32f746gdiscovery.html#

hi Howard, Good find, appreciated ! Looking forward to your additional finds. What an interesting problem to be solved ! I just came across a 1986 patent, issued in 2005 that might be conceptually

On that board, you really want to check the prices at Mouser, or Digikey, or see if you can buy from ST directly. The board uses a DSI driven display, but it's not really designed to drive another