>
>I have a capacitor marked only 'Sprague 1000MMFD6KVDC'. It's about 1"
>(2.5cm)
>diameter and 5/8" (1.56cm) thick. Is this a 'TV doorknob'?
? no
>I had planned to
>use it for a blocking capacitor for my 1500-watt output (3KV on plate) amp
>Comments?
? it should fly ok at 1500w. .
>
>I also have some Centralab type 850s 5KV doorknob capacitors that I was
>intending to use for padding the tune and load C on 160 and 80 meters. Are
>these appropriate?
? For a tuned circuit, one needs 750ppm/degree Celcius temp.
coefficient or better. In >100pF units the dielectric is usually not
temperature stable. Y5P dielectric is far from stable.
- later, Vic
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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