Or it's a multi-winding transformer, which is exactly the case here. Also, in windings that are rated for a very low current, the manufacturer may use over-sized wire to help avoid breakages, so the
Details can be seen at: <http://www.ifwtech.co.uk/g3sek/cleansig/imd1.htm> This information is what originally set me on the path towards designing the Tetrode Boards, first for my own use and then a
Has anyone installed my Triode Board in a MLA-2500? I'm asking on behalf of a potential customer who would like to hear of anyone's practical experience. -- 73 from Ian GM3SEK http://www.ifwtech.co.u
Does anyone have information on this unit, please? We found this while preparing a SK inventory for sale, but have not been able to move it yet to take a look inside. -- 73 from Ian GM3SEK http://www
By the way, no European manufacturer ever used triodes for RF amplifiers except before the time tetrodes were invented. Thats why G3SEK had to develop those excellent tetrode boards before WW3 start
If you could list the top few important parameters to low distortion tetrode sign, what are they? I think most of us know the importance of well-regulated screen voltage. Other top factors? First of
Vic K2VCO wrote: I'm thinking about this issue now for my project 4CX1000A amplifier. The problem I see is the first element getting chopped by the screen relay pull-in time, which would have to be u
Anyone who has been wishing to order my Triode Board, Tetrode Boards or kits will be aware that the web-store has been closed for the last 2 weeks. I have been away from home, dealing with a family h
Duhh... Thanks, Lee - the link is corrected below. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek/boards/boardshop.htm _______________________________________________ Amps mailing list Amps@co
Behiels JeanPierre wrote: Regarding this subject ... I had in the past problems with a try to setup a experimental amplifier with a twin GS35b tube for HF purpose. Could not obtain resonnance of outp
Jim Garland wrote: No, the B- is only grounded at the RF deck, at the same spot that the cathodes are grounded. To steer the cathode current properly, it is important that the B- lead NOT be grounded
a pan The other problem is that heat-insulating bubbles tend to form on the surface. It needs some kind of pump to keep that boundary layer continuously "scrubbed" with cooler water. (Exactly the sa
the physics of out there There is a big difference in cooling efficiency between the turbulent air that comes directly out of the blower, and the same volume of smooth flowing air coming out of a lo
flow past vent on why the back flow up impedance. The vents from the vents pressure that the somebodly air flow. This system. to give opinion) plate Unfortunately, the causes hence, decrease Sorry,
That is also true - the complete opposite of layouts like the Dentron DTR-2000 where the 8877 blasts HOT air at the tank circuit. cooling back making it a Back to physics. The only fundamental requi
A couple of other things to think about: 1. Cathode bypassing. In some ways, DC-grounding the screen is only exchanging a screen bypassing problem for a similar problem at the cathode. You may need
the The length of ducting will lose blower pressure and decrease the air flow rate, so your amplifier will not be cooled as well as it is now. The only question is: how much less? The biggest risk i
may draw 1 watts. Correct, the resistor needs to be rated 30W or more to handle normal operating loads. amp acting Sorry, NOT correct - two times over. First of all, if a fuse or resistor is rated t
I meant "wrong in two different ways" as the two following paragraphs explained. 73 from Ian GM3SEK _______________________________________________ Amps mailing list Amps@contesting.com http://lists
solves is Ahem... it certainly doesn't say "determine" the load impedance because you can't do that. The wording I used throughout was "ESTIMATE the load resistance". The method using "k" can only po