I'm keen to do a bit of a survey here - what do you like and use for your plastic film?
Are we as a hobby all over the map or are we, perhaps, mostly using the same one or two products? Has any kind of consensus formed on what "the good stuff" is?
Thank you.
Are we as a hobby all over the map or are we, perhaps, mostly using the same one or two products? Has any kind of consensus formed on what "the good stuff" is?
Thank you.
Assuming caps are what we are talking about -
Teflon is best, or polystyrene if you can find it. Most of us make do with polypropylene. NPO ceramic is fine in small values.
Teflon is best, or polystyrene if you can find it. Most of us make do with polypropylene. NPO ceramic is fine in small values.
Indeed Zoji6645 capacitors are highly influenced by the properties of the insulating film, but I think that cvanc is asking about the stuff used for electrostatic speakers.
Depends on... if you want high strength and low elasticity and low mass, it is polyester (mylar).
If the mass does not matter so much and you dont´ want to play higher frequencies than a couple of kHz then there is many more options.
Like:
If the mass does not matter so much and you dont´ want to play higher frequencies than a couple of kHz then there is many more options.
Like:
- Nylon
- PPS (polyphenylene sulfide)
- PEEK (polyetheretherketone)
- PEI (polyetherimide)
- PAI (polyamide-imide)
You want high tensile strength. Low mass. so typicaly between 3 and 5 um thick for treble.
Other factors such as non hygroscopic = not polyamide (nylon) . It should be quite easy to apply coating so "fat" surface polymer is not so suitable.
Mylar is fulfilling all requirement i would say.
Other factors such as non hygroscopic = not polyamide (nylon) . It should be quite easy to apply coating so "fat" surface polymer is not so suitable.
Mylar is fulfilling all requirement i would say.
I like kapton for planar magnetics because of the risk that the conductor will heat up and affect the plastic. I’ve combined kapton tape with stretchable plastic as a sort of surround in order to lower the driver’s resonance frequency. For electrostats I’ve always used Mylar.
Few
Few
None. I recently started buying drivers with as little plastic as possible because I prefer to use biodegradable materials.
Information : Kapton and Copper have the same elongation if heated up! (and having the same temperature)
So delamination between these both materials does not occur ...
So delamination between these both materials does not occur ...