[Amps] plate choke

[Roy Koeppe]

Said,


 "...Circulating current is limited by
 parallel resonances in the winding,

At 1.8MHz, with a typical Ham amplifier - I don't think so..."


Follows is published data pertaining to Ohmite plate choke model Z-7,
operating range 3 to 20 mHz, 84 uH, core dimensions 6" x 9/16"...

            "Rp (apparent parallel resistance) at 3 mHz -(brace
yourself)- is appreciably in excess of 200,000 ohms".

I must assume that their 1.8 mHz model, if they made one, would have the
same low-end specs.

I also agree that manufacturers do try to cram 160M into a single plate
choke with high compromise. Still 3000 ohms is a far cry from 200,000.

73,   Roy         K6XK