Is Wes' raw impedance data for the conventional and nichrome suppressors published anywhere? Without any data to study, this debate ends being more like a political battle than scientific inquiry. Se
Is Wes' raw impedance data for the conventional and nichrome suppressors published anywhere? Without any data to study, this debate ends being more like a political battle than scientific inquiry. Se
Mostly correct as general statement but also some tubes mechanical construction (internal electrodes or wires, socket dimensions and shape) lead to inherent stability problems and the best RF designe
Mostly correct as general statement but also some tubes mechanical construction (internal electrodes or wires, socket dimensions and shape) lead to inherent stability problems and the best RF designe
Very true! 572Bs are amongst the worse. 73 Peter G3RZP -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems
....... and the old 807 eg the military version without screening because of economical reasons. The first 807s that came out were a 6L6 with additional screeing and quite stable. Did not Pat Hawker
Wes' goal was to prove if nichrome made the suppressor better at VHF. He measurements show it does not, but then that's what anyone who understands parallel R/L circuits would already know. If you l
Help me here. Isn't this the purpose of the suppressor? That is , it's function in design is not only to limit parasitic currents to a "negligible level," but more importantly "suppress" the oscilla
I have a nasty suspicion that one of the problems with the classic suppressor is that the carbon comp resistor is pushed pretty hard in terms of dissipation, especially on the higher bands, by the fu
I have several suppressors made by Eimac for 3-1000Z's and 4-1000A's. They use large carborundum resistors and silver plated strap or large bus bar wire. Most commercially made suppressors for large
In case the resistance become very high or infinite, not only the suppressor doesn't work but there's an increased risk to have parasitics than without the damaged suppressor. When amplifier power is
In case the resistance become very high or infinite, not only the suppressor doesn't work but there's an increased risk to have parasitics than without the damaged suppressor. When amplifier power is
anymore. good points, Peter - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQU
Are you making this stuff up, Tom?. Anyone who reads Wes' numbers knows better. VHF Q always decreases when L-supp increases. However, as L-supp increases, dissipation in R-supp increases exponentia
Indeed. There is simply too much L in the grid. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative
Your point is precisely mine. The function of a parasitic suppressor in today's environment is no longer mere suppression, but outright prevention. This was not the case in the 1920's. Many articles
Just a few days ago, I had an experience which demonstrated what I had thought was quite probably true for many years. The question is, "Why does a carbon composition resistor change values?" The cor
Unfortunately, the average casual amp home-brewer has nowhere near the test equipment necessary to determine the need for a suppressor in his particular lay-out. He is constantly in search of a devi
? "back then" VHF parasitic suppressors were never used to absorb the considerable energy of the actual oscillation. Like today, they were used to reduce VHF amplification at the anode-resonance. Wi
? As I understand it, the archdiocese of New York currently has one exorcist on its staff. - Rich..., 805.386.3734, www.vcnet.com/measures. end -- FAQ on WWW: http://www.contesting.com/FAQ/amps Subm