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current??. With only that tube it ### good question. I was told that the Eimac SK-410 will easily handle 26 A. Ditto with a SK-510 [4-1000 socket. Some versions of the 4-1000 ran 7.5 v @ 26 A] ###

wrote: ### What is a ...."magnetic regulator" ? ### How fast is fast ?? As fast as practical ?? My idea of using a sola ferroresonant xfmr... was now I don't have to ever worry about my fluctating

060920@...> wrote: technical articles in QEX instead of QST?) but I don't see huge rheostats for filaments either. ### I wonder the same thng.... probably to promote sales of .."QEX". They have one

a cheap and reliable methode is the magnetic regulator, I use choke regulated heater transformers. There is no need for fast regulation. 73 Peter ________________________________ From:

060920@...> wrote: seems building technical

Tony Wrote I think that is fairly obvious. Most hams today wouldn't understand them and don't care, and the ARRL can make more money selling another magazine. David KC2JD

pentalab escribi:

pentalab wrote: I'd be interested in the article (wonder why ARRL puts good technical articles in QEX instead of QST?) but I don't see huge rheostats for filaments either.

OK... I'll bite. What exactly is Orr's... "super cathode driven" circuit all about ?? Is this simply semi floating the grids on a 3-500Z.... or something else ? 25 years ago.... there was this circuit

A CV transformer is uneffected by RF. An active regulator will have to be properly shielded so RF doesn't modulate it. I saw it as a cool idea but the failure modes could be a problem. gfz pentalab

wrote: Filament any size tube is accomodated by increasing pass transistor sizes, feature. My guestimate suggests that it would be cheaper building this regulator than buying 2 X 50 or 100 watt

My last VHF Contest was a few miles East of Mt. Pi?os on Frasier Mountain. What is your callsign? R L Measures, AG6K, 805.386.3734 r@..., , rlm@..., www.somis.org

Reid Brandon at Eimac phoned me today. Reid passed this important info along. The correct phone number for Arnold Howell [KB8JCY] of Howell Tube Sales is 330-744-7582. Make sure to *82 1st... to shut

Just looking around. Hi to Rich! Longtime no hear! Remember that excursion to Mt Pinos for the VHF contest in the 70's? 73/Rick

I often order HV transformer from a local shop. price: RMB2 per VA(25C/VA), a 1000VA CCS HV xfmer =$253(TYPE R or C iron core), if it is "EI" type iron core, the price is $150. 73! Hsu

Try this again since it claimed to post it then didn't. That transformer looks somewhat familiar. There's a company just outside of LA named WTS which is short for Woodys Transformer Service that

That transformers construction looks familiar. Several of us used a transformer manufacturer just outside of LA which was called Woodys transformer at the time. They wound about all the transformers

That transformers construction looks familiar. Several of us used a transformer manufacturer just outside of LA which was called Woodys transformer at the time. They wound about all the transformers

cleaner with a 2-tone modulation test than it is with voice modulation. With voice modulation, total IMD is c. 21db below pep. > > ### I have a 2 x 4-400 G2DAF linear. About 900w out with 75 w of