[Amps] RF parts and parasitics!!

[DF3KV]

Not in mine, no instrument, no resistor, cathode via the choke and heater
transformer c.t. grounded

73
Peter

-----Original Message-----
From: Alex Eban [mailto:alexeban at gmail.com] 
Sent: Donnerstag, 27. August 2009 15:27
To: 'DF3KV'
Subject: RE: [Amps] RF parts and parasitics!!

Sure' there is bound to be a swamping resistor of a few ohms for current
reading purposes which also keeps the impedances from soaring.
Sometimes there is a loading resistor also for the same purpose.
Alex	4Z5KS

-----Original Message-----
From: DF3KV [mailto:df3kv at t-online.de] 
Sent: Thursday, August 27, 2009 4:11 PM
To: 'Alex Eban'
Subject: RE: [Amps] RF parts and parasitics!!

Hi Alex,

Sure, but then still the impedance seen by the exciter is not like an open
circuit.
With no anode voltage supplied the input SWR is not higher then 1.3 driving
my L4B, grids are directly grounded to the chassis.
Same with my homebrew amp, no input circuits, grids directly grounded, input
SWR on any frequency from 2-30MHz below 1.5

73
Peter

-----Original Message-----
From: Alex Eban [mailto:alexeban at gmail.com] 
Sent: Donnerstag, 27. August 2009 14:43
To: 'DF3KV'; amps at contesting.com
Subject: RE: [Amps] RF parts and parasitics!!

Gentlemen:
	Please keep in mind that, by definition, a choke has a reactance at
least 10 times of the other relevant impedances in a circuit.