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Re: Plate Blocking Capacitors again
He's? got? it? mounted? on a piece? of? fiberglass.? ?He? shoulda? used? nylon? screws? to? mount the? fiberglass to the? rear? wall....and? also? another? pair? of nylon?
By Jim VE7RF · #37102 ·
Re: Plate Blocking Capacitors again
I? went? through the? entire? pdf.? ?They? state the? mica? caps? are? designed? for? 100? khz? to? 3? mhz..that's? it. Then? the? graphs? depict current? ratings? from?
By Jim VE7RF · #37101 ·
Re: Plate Blocking Capacitors again
Interesting that he uses one of the 'Millen HV connectors' that are supposedly only rated at 2500VDC to bring his 6500VDC in! Mod-U-Lator, Mike(y)/W3SLK From: [email protected]
By Mike Sawyer · #37100 ·
Re: Plate Blocking Capacitors again
Not always: https://www.cde.com/resources/catalogs/HVOLT-CYL.pdf 73 Peter _____ From: [email protected] [mailto:[email protected]] On Behalf Of Jim VE7RF Current rating on mica's
By Peter Voelpel · #37099 ·
Re: Plate Blocking Capacitors again
I'd be? more? worried? about? the? current? rating..vs? V? rating.? ?What? bands are? you? planning? to? use..and? what? tube(s) ?? ?If? u? are? using? tubes? with? typ
By Jim VE7RF · #37098 ·
Re: Plate Blocking Capacitors again
Many thanks for that Peter. At 10kV peak working that capacitor looks to have a much lower rating than mine. 73s Tracey G5VU
By Tracey Gardner G5VU · #37097 ·
Re: Plate Blocking Capacitors again
Seems to work https://www.qsl.net/kf8od/3cpx5000.html 73 Peter _____ From: [email protected] [mailto:[email protected]] On Behalf Of Sharalyn Koeppe Sent: Sonntag, 19. Januar 2020 23:12
By Peter Voelpel · #37096 ·
Re: Plate Blocking Capacitors again
I have understood that mica is not suitable for plate blocking due to dielectric migration from the DC applied. 73,?? Roy??? K6XK
By Sharalyn Koeppe · #37095 ·
Plate Blocking Capacitors again
I have an 1100pf large block shaped Dubilier mica capacitor dating from 1944. It measures approx. 3.75w x 2.25d x 3.25h inches It states on it that it was tested as follows (a) 6 amps at 300kHz for 1
By Tracey Gardner G5VU · #37094 ·
Re: Interesting High Voltage capacitors
OK, I? downloaded? the? entire? catalog on? that? series.? ?Most? are? rated? at? c 100 Amps? of? ripple? current....? but? at? lower? ambient? temps.? ?Per? cornell? dublier?
By Jim VE7RF · #37093 ·
Re: Interesting High Voltage capacitors
Re[2]: [ham-amplifiers] Interesting High Voltage capacitors Friday, January 17, 2020 In an RF amp where might be appropriate to use Teflon capacitors? Best regards, Chris 2E0ILY
By Chris Wilson · #37092 ·
Re: Interesting High Voltage capacitors
Those are DC link Capacitors. I have used them for years now in amplifiers. Not that brand though.? I used the 944U. They make them up to 1.4KV at 70UF.? Or 1.2KV at 100 UF.? That is full working
By W7WRX · #37091 ·
Re: Silly as it gets
G'Day Jim, You made a very good post to round-off this entertaining thread of posts largely by Ned Flanders type insufferable puritans. My other two takeaway quips from the most amusing read were
By Leigh Turner · #37090 ·
Re: Interesting High Voltage capacitors
I? downloaded? their? entire? catalog? in? that? series.....4? days? ago.? ?Now? I'm? having a helluva? time bringing? it? up. Can't? remember? if? they? stated? ESR at?
By Jim VE7RF · #37089 ·
Silly as it gets
https://forums.qrz.com/index.php?threads/illegal-high-power-hf-amplifiers.659044/ Puritans, nutcases, bs artists,? qrpee? types, tubes? that don't? even? exist,? you? name? it. One? bozo
By Jim VE7RF · #37088 ·
Interesting High Voltage capacitors
I came across these capacitors while searching for HV electrolytics. They are available upto? 2kv, are dry sealed, and available upto 1000uf or more. They are also rated for high current DC operation
By tardivat@... · #37087 ·
Re: Coil 3.72 software
He? took? SS? off? the? list.? It's? beyond? piss? poor......sky? high? RF? resistance. N6BT,? original owner of? F12? tried? using? 8? gauge? solid? SS? wire? for? the
By Jim VE7RF · #37086 ·
Re: Coil 3.72 software
Wow!. I got the hang of it. Good fun and very useful for my current project. 73, Alek.
By Alek Petkovic · #37085 ·
Re: Coil 3.72 software
Ah. I think I have it! I was waiting for the fields to clear when I clicked on the arrow/s. For some reason, they don't but it is ok, because you just have to type over the existing numbers. Found it
By Alek Petkovic · #37084 ·
Re: Coil 3.72 software
Sand,? salt,? rock salt? have? been? used? by a buddy.? ? ?Then? ?u? have? to? get? it? all? out !? ? ?Buddy? tried? suction? at? one? end.....and? compressed? air? at?
By Jim VE7RF · #37083 ·