would it be possible to build a crt driver board from scratch or would the parts and information be to hard to source ?

This is not an easy problem to solve.

What resolution do you need.

I would look at some old VGA board drivers, they provide you with most of the basic circuits.

You need high voltage to directly control the yolk deflection coils. Please be very careful, those levels can kill.

The electron gun is a lower control voltage, if you check the VGA designs, they were all TTL for the RGB inputs.

The short answer is yes  you can, but unless you know what you are doing, no you should not attempt.

When I went through Tech school fifty years ago, we were taught how to work with CRT voltages. I would consider that level of training as the minimum needed to work with the voltages.

DAB

hi thanks for the reply

and yes not an easy problem at all but the way i see it the whole crt community surely could use a plug and play(to some extent) solution for crt tubes.

but thanks for your input ill start doing some research into vga circuits and i can assure you i wont be messing around with the hot end of the system until a long ways down the track .

would it be possible to approach this from a point of reusing an existing jungle chip and creating a new board to use said chip ?therefore keeping any original input capabilities wile being able to use newer components on a smaller sized  over all board  ?

There are lots of CRT driver schematics available with a simple search on the internet if you want to get down to the component level. If you want to find a CRT driver card already built, they are approximately free. Anyone who has an old CRT squirrelled away would likely be happy to give it away.

If you want to modify an old TV to take RGB, there are lots of YouTube instructions on how to do it.

https://www.youtube.com/watch?v=DLz6pgvsZ_I&ab_channel=The8-BitGuy

Be sure to blog here about your build - it sounds interesting.

hi yes i have seen people ad rgb to a standard crt tv but i think id rather go down the route of making a pcb for an existing jungle chip

I am not familiar with the jungle chip, so I do not know.

DAB

Jungle chip is a generic term specifically describing the video processing chip in CRT driver cards that, among other things, can convert composite signals to RGB signals.

thanks for your input iv got a few good starting point to work from ill be sure to let you know how it goes

Have found a Texas Instruments RGB Crt video design guide working thru the board schematics for the

TI LM1203NLM1203N RGB preamplifier and the TI LM2419 Crt Driver ICs  so im hoping this will be a good start there design included

contrast control, brightness control, cutoff adjustment, delta gain adjustment (for white balance) and blanking

This might be blasphemy, but have you thought about using a modern LCD with driver software that simulates the look of old scanline CRTs?

A search for "CRT monitor simulator" turned up a lot of results, but I don't want to recommend anything, as I have no experience with any and don't know your system requirements.

Just a thought.

- W.

hey thanks for the input but i have messed around with some lcds and emulators and to me at least it doesn't compare to original crt and hardware(plus that would be easy and a good project wont be easy ahaha)

thanks or the suggestion tho all input is appreciated im really just learning as i go building upon what i know of electronics so far so its good to see how others might approach it.