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In Reply to: Let's start with mica capacitors posted by sser2 on April 25, 2017 at 16:19:03:
These are uniquely Russian, no Western analogs.K75 were designed to improve electrical characteristics and reliability of paper capacitors. They have two layers of dielectric: mylar and oil-impregnated paper. Most have metallization electrodes, but some have foils. They have temperature rating of 125C.
K75-10, K75-24. AC-rated metallized film capacitors in sealed steel cases. They are primarily intended for 50 Hz AC, but, unlike Western motor run capacitors, have useful frequency range up to 10 kHz, enabling their use as superb power supply filter capacitors.
K75-12. Foil capacitors similar in design to K40Y-9, and recommended for coupling duty.
K75-15. Foil, rated in kilovolt range DC. Very good for high voltage power supply.
K75-22. Foil capacitors rated for kilovolt AC.
K75-11, 17, 40. Impulse duty capacitors designed to maximize stored energy and peak discharge current. Rumors have it that they were used in nuclear weapon triggers.
K75-47. Capacitors in epoxy body. All other K75s are in tightly sealed steel bodies.
Edits: 05/02/17
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Follow Ups
- Hybrid capacitors K75 - sser2 14:03:25 04/28/17 (3)
- RE: Hybrid capacitors K75 - twystd 23:21:38 04/28/17 (2)
- Sorry, I messed my notes a bit. - sser2 17:42:29 05/02/17 (1)
- Thanks! (nt) - twystd 19:24:30 05/02/17 (0)
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