Color Classic VGA Woes

[JDW]

I have a question about this CL26 cap, on powercc.org i see the recommended cap is 4.7nF 1600V, but the cap i see seems so small for that voltage, is the 1600V a typo?

I discuss CL26 in my video below starting at 49:00...

So while it's actually 1nF~3.9nF, not 4.7nF, you can use 1000V or higher film caps, preferably polypropylene.

This person claims to have tried values ranging from 1nF up to 5nF but found it wasn't a solution for him.

 

[JDW]

i found this part at LCSC https://www.lcsc.com/product-detail/C249170.html i think this will fit

Well, that's a ceramic. Using a polypropylene film cap will result in better stability over the operating temperature range. No DC bias effect on film caps either, unlike ceramics.

Honestly, I just bought myself a 1000V pack of film caps (various values) on Amazon Japan in the past. There are several values within the 1~4nF range. I just never needed to try it. But yes, the 1000V rating is safe to use. Even @Bolle used 1000V rated caps at CL26.

 

[ArjenCNX]

Well, that's a ceramic. Using a polypropylene film cap will result in better stability over the operating temperature range. No DC bias effect on film caps either, unlike ceramics.

Honestly, I just bought myself a 1000V pack of film caps (various values) on Amazon Japan in the past. There are several values within the 1~4nF range. I just never needed to try it. But yes, the 1000V rating is safe to use. Even @Bolle used 1000V rated caps at CL26.

Thank you sir! i also have a big box of capacitors here bought as a pack per kilo, usually works, but contains nothing over 450V, ill check for some other cap assortments also