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Old 06-25-2019, 05:07 AM   #1
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Join Date: Apr 2019
City & State: Italy
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Default Filtering Capacitors Around Flyback Transformers In CRT Monitors

I have a question about the filtering capacitors to be used around the flyback transformer in CRT Monitors.

I mean the 10-22-33uF capacitors which filter ~160V voltages going to the flyback trafo.

1) Do they have to be low E.S.R.?
The original capacitors are usually general purpose, but I suspect this was for cost cutting more than a requirement.

2) Is geometry and picture stability improved in case of increased capacitance?
I've seen schematics on similar models of some old Sony monitors: identical flyback transformer but capacity increased from 33uF to 47uF in a more costy version.

Last edited by Hitto; 06-25-2019 at 05:09 AM..
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