Re: Modeline experiments
As mentioned i have no choice but to construct a monitor if i want view any thing apart from 625 525 line ,i do have a monitor that might do 405 badly but rather build one where i hope to make it multi system and view most of those early television systems i can now output to it .
i have picked a tube i have handy not to big nice size for this ,its a 14SX3Y4 5.5inch black and white CRT having 12.6V 75mA heater with tests ok on a conductivity and voltage test .
Data for most CRTS like this are hard to come by but there are scraps of information gold
Filament voltage : 12V Filament current :75mA
Typical operation:
Final anode : 8KV
Vg2 : 100V there also have 300V version
Vg1 : -35V +/- 10V
some one in Poland who experimented with one mentioned the below
On the focus grid i remember the focus grid is connect to ground.. This are tetrode electron gun the final voltage 8KV will work well at lower voltage just the brightness will decrease.
So more than likely start on the ramp oscillators so they can be synced and deflection amplifiers i will not light the tube till i have at least one deflection amplifier feeding the yoke.
|