Adding Composite Input (Capacitor Question)

[ARC Tech-109]

Originally Posted by TinCanAlley

So if I put two 100uf caps negative to negative I would get a 50uf non-polarized cap, right?

No. One cap going "reverse" is essentially a short to the the waveform so it's going to be about 100uf as the other is running in the "correct" polarity. I'd start off with a pair of 22uf 16V caps back-to-back and work up from there. Remember sync is negative going with respect to ground and visual is positive going so the capacitors should be equal value however playing with the values be it negative or positive going may help work out some balance issues.

Now my question is where are you feeding the composite signal into and is this a televison receiver or real monitor? Reason I ask is twofold. One is the possibility of a hot (AC) chassis with respect to ground and two some TV receivers don't like anything other than what comes from the video detector as I'm fighting this issue now with a Magnavox T940