Carl KM1H wrote:
> Why? They aren't much more reliable.
>> I guess switching over to a few oil caps with appropriate bleeders
>> standing by externally isn't a bad idea after all.
>> Now I know why Henry used them.
Electrolytic capacitors and light bulbs are the only items in a HAM
amplifier (or almost anything
else) that have a pre-determined life expectancy.
It doesn't mater if 99% of ham amplifiers use brute force filtering it is a
bad idea on many
levels, just the stored energy discharged during "an event" makes it the
poorest of engineering
practices. It is so poor I discourage it whenever I can. Like now.
After working on hundreds of power supplies of all Voltages over almost 50
years, almost 100%
using Pi network (low pass) filters with oil filled capacitors, a very few had
any problem other
than springing an oil leak, most frequently at a bushing.
--
73 Ron KA4INM - All E-mail sent to this address shall linger in the Google
cloud forever!
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