On 12/13/2017 01:15 PM, Jim Thomson wrote:
/* snip */
## Although the tuned choke concept works, it really is a throwback to the
1950s. IF the choke and parallel resonating cap just happen to resonate at 120 hz,
the peak V across that parallel tuned choke will skyrocket, and both the cap and choke
will explode. Typ the choke is resonated just a bit higher than 120 hz, like 123 to 124 hz.
When u start sucking loads of plate current, the inductance of the choke will DECREASE a bit,
and the resonance of the choke + resonating cap combo will INCREASE some more, like now
up to 124-130 hz.
/* snip */
I must have been taught all wrong, I was taught the capacitor (to
ground) is in series with the series inductor forming a series resonant
circuit that conducts the 120 Hz to ground, instead of storing energy
like the "brute force" large capacitor. (bank)
--
Ron KA4INM - Youvan's corollary:
Every action results in unwanted side effects.
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