Capacitor Conundrum

Started by TheDolphinSpectacle, March 01, 2004, 07:44:46 PM

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TheDolphinSpectacle

Oookay, forgive me if this post is in the wrong forum, but I have a newbie question about caps.

I'm trying to do the Robert Keeley mod to my boss DS-1, and the instructions I found call for certain caps in the circuit to be replaced with Metal Film capacitors... problem is, I can't seem to find any metal film caps.  I've found metalized film caps, but I don't know if this is the same thing.  Please point me in the right direction.

Paul Perry (Frostwave)

metalised film is the same, I believe.

Dai H.

metal film = just short for metallized film

puretube

metalized.. is the correct expression for caps;
metal-film for resistors;

TheDolphinSpectacle

Thanks for the clarification, y'all rock!

R.G.

There are both "metalized film" capacitors and "metal film" capacitors.

The metalized film caps are wound from two layers of plastic film that has an unbelievably thin metal layer deposited on one side.

The metal film ones are usually described as "film and foil" "or stacked film", but you will occasionally see them described as "metal film". These consist of layers of actual, no fooling metal foil with intervening plastic insulating layers. The thicker metal foil means that they have lower internal resistance losses and hence can be better for high current, fast pulses.

Metalized film is by far the more common, more compact, and cheaper.
R.G.

In response to the questions in the forum - PCB Layout for Musical Effects is available from The Book Patch. Search "PCB Layout" and it ought to appear.

puretube

ahh, sorry, those were "foil" to me...  tnx for clearing this up, R.G.