11-02-2020, 12:04 PM
(This post was last modified: 11-02-2020, 12:05 PM by ppppenguin.)
The S correction cap is 2x 2u2 in parallel. Added another 2u2 and nowhere near enough. Even adding 4u7 isn't getting there. Looks quite nice on test card but errors are obvious on grille.
Also now getting too much EHT if I increase the width to fill the screen. Will need to change the flyback tuning.
Looking quite good now, so I'm confident i'll get the right answer.
After trimming the LOP components I'll need to put the LOP and CRT heater back on their internal supplies. I've found some TIP121 darlingtons which should be ideal for dropping the main HT to feed the LOP.
PS: moire is JPEG compression artefact. Original hi res photo is fine but a bit big to post here.
Also now getting too much EHT if I increase the width to fill the screen. Will need to change the flyback tuning.
Looking quite good now, so I'm confident i'll get the right answer.
After trimming the LOP components I'll need to put the LOP and CRT heater back on their internal supplies. I've found some TIP121 darlingtons which should be ideal for dropping the main HT to feed the LOP.
PS: moire is JPEG compression artefact. Original hi res photo is fine but a bit big to post here.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
