Silvered Mica Capacitors
Commonly known as silver mica capacitors, these rendered clamped mica capacitors obsolete. Instead of being clamped with foils these are assembled from sheets of mica coated on both sides with deposited metal. The assembly is dipped in epoxy. The advantages are:
- Greater stability, since there are no capacitive airgaps that can change dimension
- Airtight enclosure removes the risk of oxidation or corrosion of plates or connections
- Greater capacitance per volume, since there are no airgaps between plates and mica, the conducting surfaces can be thinner
- No clamping mechanism is needed
Silvered mica capacitors are one of the less popularly used types due to their high cost.
They are sometimes informally referred to as mica capacitors. Any modern reference to mica capacitors can be assumed to mean these, unless pre-war equipment is being discussed.
Other articles related to "mica, capacitors, mica capacitors":
... that in humans is encoded by the MICA gene ... MICA encodes the highly polymorphic MHC (HLA) class I chain-related gene A ... It is thought that MICA functions as a stress-induced antigen that is broadly recognized by NK cells, NKT cells, and most of the subtypes of T cells ...
... John Mica (1943–), Florida State Representative, U.S ... Mica ... Mica (1944–), U.S ...
... They consisted of sheets of mica and copper foil sandwiched together and clamped ... These had even worse tolerance and stability than other clamped capacitors since the mica surface is not perfectly flat smooth ... References to mica capacitors from the 1920s always refers to this type ...
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