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I disagree with the statement "Mica capacitors, which are now obsolete, were in use in the early 20th century.".

It seems to me mica capacitors are still being produced and are still in use in certain applications.

A few links:

http://www.cde.com/catalog/mica/#hv

http://www.radio-electronics.com/info/data/capacitor/capacitor_types.php

http://www.sr-mica.com/application.html

No doubt, there importance is much less than 50 years ago. But to call them obsolete seems to be wrong.

— Preceding unsigned comment added by Ron Werner (talk • contribs) 11:00, 30 June 2010 (UTC)[reply]

I'm pretty sure this is a terminology issue. There are 2 types of mica caps, clamped and silvered, called mica and silver mica respectively. The former are very much obsolete, since they have much inferior performance and cost much more. Its not uncomon to hear silver mica caps referred to informally as mica.

PS don't forget to sign your entry with 4 tildas, or things can get quite confusing.

Tabby (talk) 06:59, 18 March 2011 (UTC)[reply]

Another thing I dislike in the article is that Mica capacitor is now used to refer to silver mica capacitors unless in pre war references. Should this read pre WW II? pre WW I? Its unclear though I would think WW II is meant. Nasdram (talk) 06:59, 18 March 2011 (UTC)[reply]

 Done • Sbmeirow • Talk • 09:07, 11 December 2020 (UTC)[reply]

Irrelavent reference to silver mica, the very likely motive is utilizing Wikipedia for marketing purposes, i.e. to increase perceived value of a product.

Adding a "Tone Brightening" capacitor between potentiometer pins two and three is nothing new, it goes back many many decades. The effect being a crude approximation to loudness compensation to counter the effects mentioned in https://en.wikipedia.org/wiki/Fletcher%E2%80%93Munson_curves . Instrument amplifier factories add a 'brightening' capacitor in by buyer demand and is carried out at extremely low cost. In a blind listening test it makes no audible difference what type of capacitor is used for 'brightening' (of a given capacitance value), the only difference would be imaginary, presumably based on what one reads online about the product they are considering buying. 85.48.187.183 (talk) 11:21, 17 March 2019 (UTC)[reply]