开云体育

Jim, Yes, your correct on the 3-5% ripple for the plate tranny. I was thinking of the low voltage DC supplies when I wrote that. Sorry, my faux pas. The formulas are written around 5% actually since

ham_amplifiers. ### Yes HSU. We were wondering why it took you so long to find us !! LOL ### You can talk about 811-A's all you want here. And nobody is going to suggest boycotting Chinese made

Jim, that the transformer can be smaller than one for a capacitor input by a good bit. Most transformer manufacturers give for a choke input, the rms current is 1.2 x DC current, and for a cap input

Hi, I have join the list.Thanks for many friends Invitate me to ham_amplifiers. Hsu

All, At one time, I had the address and phone number for a supplier around Dayton or Cinci Ohio for transformer related supplies. They carried paper, varnish, wire, hardware, and lams. EIS I know

For higher power I use 3/8" on 160m, 1/2" on 80+40m, followed by ~3/4" on the higher bands. I do my silver plating with a homebrew mixture. When I had no other stuff on hand, I once used sugar to fill

See below, wrote:

OK, I've got the grids of the 572's grounded through 33 ohm resisters in parallel with 940pf of capacitance. No smoke!!! Plates are NOT glowing!! I'm getting a reading of approx 80-90 ma of plate

wrote: ### LOL ! I typ use 1/4" 3/8" and 1/2" [6-9-12 mm od] ### chek out what Multronics wants for say 1/2" tubing coil stock... like a 14 uh coil.... you will gag.. and have sticker shock. $8,000

wrote: glitch resistors and magnetic breakers in the primaries of the transformers is all I need ### You gotta be kidding us right ?? 2 uf or NONE !! ### here in NA... although 3 phase power [typ 12.5

wrote: ### I looked at the 8k/3 k ultra manual I have [same manual does both amps]. On the 8k they use 5 x 20k-100w resistors. Diss is a whopping 300 W CCS..... presumably so the resonant choke filter

Copper tubing is quite expensive overhere now. 10mm diameter is 3,60 Euro/m, 18mm is 6,40 Euro/m. Prices are for small quantities of course. 73 Peter ________________________________ From:

Zzzz Denny == Have you checked the max V rating of Ohmite's 100W resistors? R L Measures, AG6K, 805.386.3734 r@..., , rlm@..., www.somis.org

Instantly is pretty soon.

What is your reason for that large capacitor? Are you using single phase at that power level? I only use 2?F maximum or none in my large power supplies, so my glitch resistors and magnetic breakers

--- In ham_amplifiers@..., R L Measures <r@...> wrote: RICH SEZ...Correct. Jim. My thinking on NOT using a fuse holder is that if the fusing element blows, the reason is not a defective

I check in here every few days to count on my mental fingers how many times Rich rants on about Tom... Then I go to the other shrine and count how many times Tom mentions Rich... It's umpteen to zero

the grid current will skyrocket..... hence another reason for a fast grid fuse. seems to me, both the plate current and grid current went beserko. instantly... > RICH SEZ ..quite soon is more like it

indeed quite soon is more like it

45 ohms is 36% high. If the outside of the resistor is not burned, the resistor may have been damaged by an intermittent condition,