Sinclair mtv1

[Electronic M]

Another solution for the analyst NP video cap is to grab a couple of common 47uF 350V+ polarized caps and connect them in anti-series...That is connect them in series but with one backwards polarity from how you would stack flashlight batteries in series. That creates what is effectively a 23.5uF 350V+ non polar cap. I've done this a few times when I needed to and it's been good.

[Chris K]

Originally Posted by Electronic M

Another solution for the analyst NP video cap is to grab a couple of common 47uF 350V+ polarized caps and connect them in anti-series...That is connect them in series but with one backwards polarity from how you would stack flashlight batteries in series. That creates what is effectively a 23.5uF 350V+ non polar cap. I've done this a few times when I needed to and it's been good.

Really? That would work? I actually thought about doing something like that although my idea was to do it in parallel, not in series. I decided to not try as visions of magic smoke and fire danced through my head.

[Kevin Kuehn]

Unless you're feeding the video signal into a very low impedance I have to wonder why such a large capacitance value is needed. There's certainly no video coupling caps of that large value in a tube TV. I'm sure there's some obvious reason I'm overlooking. Possibly solid state stuff.