Oil filled, mica transmitting capacitors

[N8YX]

Just came across a largish box of these last weekend. Person who has them (XYL of an SK) said to make her an offer that she won't refuse.

Islanders get first crack at them.

I'll get specifics if anyone is interested.

[N4VGB]

Capacitance and ratings rule price.

[N8YX]

Next time I get over that-a-way I'll make some notes.

[kd8dey]

Next time I get over that-a-way I'll make some notes.

I have seen oil filled capacitors used for H.V. power supplies BUT I didn't know they were Mica.

[W1GUH]

How old? Close to expiration?

[N8YX]

I have seen oil filled capacitors used for H.V. power supplies BUT I didn't know they were Mica.

Note the comma.

Both types (oil-filled and mica) are in the box. ;)

[N8YX]

How old? Close to expiration?

Will get that info when I see them next.

[KA5PIU]

Will get that info when I see them next.

Hello.

Unlike electrolytic caps, both Mica and Oil filled can last for years.
Power utilities as well as electric clocks use oil filled capacitors and the life can easily be 70+ years.
The same is true of Mica caps, to a degree.
Mica caps can corrode and change value.
A good cleaning in distilled water in an ultrasonic cleaner will work wonders.
But, it will also frequently clean off any printed markings!

[N4VGB]

Hello.

Unlike electrolytic caps, both Mica and Oil filled can last for years.
Power utilities as well as electric clocks use oil filled capacitors and the life can easily be 70+ years.
The same is true of Mica caps, to a degree.
Mica caps can corrode and change value.
A good cleaning in distilled water in an ultrasonic cleaner will work wonders.
But, it will also frequently clean off any printed markings!

I dunno what we'd do without you.

[NQ6U]

I dunno what we'd do without you.

Me either, but I'd like to find out...