Well you need to figure out a way to isolate the digital and analog ground. Maybe through a cap and ferrite bead? Dunno. Thats the fun part!
Sure the breadboard thing doesnt help, But at the same time I built an horizontal oscillator/sync circuit on a breadboard back when I was screwing around with the macintosh monitors, and didnt really have a problem. But, your doing something way more advanced than I tried to do. haha.
The retrace definitely has to be in sync with the line frequency, which is your horizontal. The flyback can be something different and isolated as long as its phase locked. You can use a free-running oscillator for the flyback, But you need a good HV capacitor to filter out the noise. The old school tube type TVs from the 1940s, the electrostatic sets like the motorola VT-71 used a free running HV generator with a tickler coil on the HV rectifier tube. And it filtered out noise by shielding the HV circuitry away from everything else, and big HV filter caps.
The bell of the CRT makes a good capacitor through the aquadag, BUT they dont use any grounding straps! try one. I bet itll work.
Clever little circuit though. Never thought about using a 1-shot multivibrator setup. Now, my brain is more digital-minded than analog, so I would have used something like a programmable divider, or something of that nature. (digitally adjust horiz position)
Sure the breadboard thing doesnt help, But at the same time I built an horizontal oscillator/sync circuit on a breadboard back when I was screwing around with the macintosh monitors, and didnt really have a problem. But, your doing something way more advanced than I tried to do. haha.
The retrace definitely has to be in sync with the line frequency, which is your horizontal. The flyback can be something different and isolated as long as its phase locked. You can use a free-running oscillator for the flyback, But you need a good HV capacitor to filter out the noise. The old school tube type TVs from the 1940s, the electrostatic sets like the motorola VT-71 used a free running HV generator with a tickler coil on the HV rectifier tube. And it filtered out noise by shielding the HV circuitry away from everything else, and big HV filter caps.
The bell of the CRT makes a good capacitor through the aquadag, BUT they dont use any grounding straps! try one. I bet itll work.
Clever little circuit though. Never thought about using a 1-shot multivibrator setup. Now, my brain is more digital-minded than analog, so I would have used something like a programmable divider, or something of that nature. (digitally adjust horiz position)