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
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Chris Wilson
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#37092
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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
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W7WRX
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#37091
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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
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Leigh Turner
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#37090
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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?
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Jim VE7RF
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#37089
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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
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Jim VE7RF
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#37088
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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
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tardivat@...
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#37087
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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
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Jim VE7RF
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#37086
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Re: Coil 3.72 software
Wow!. I got the hang of it. Good fun and very useful for my current project. 73, Alek.
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Alek Petkovic
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#37085
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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
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Alek Petkovic
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#37084
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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?
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Jim VE7RF
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#37083
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Re: Coil 3.72 software
Make sure you read the text files. You will need to create a shortcut and change some of the parameters before it works correctly. Jim ¨C KR9U Sent: Tuesday, January 7, 2020 11:34 PM To:
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James Wolf
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#37082
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Re: Coil 3.72 software
Did? u? ?read? the? notes ?? ? ? Use? the? up and? down? arrows? to? ?change the? parameters? in? the? center? ?section.? ?Or? use? the? mouse.? Use? mouse? for the? 2 x
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Jim VE7RF
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#37081
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Re: Coil 3.72 software
I got 3.79. Question. How do you change any of the values/parameters? When I open the program, it shows a pre calculated example and there seems to be nothing I can do to change frequency, wire size,
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Alek Petkovic
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#37080
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Re: Coil 3.72 software
Great info in your posting. I did not realise that this was why there is usually a large diameter coil in most amps. I knew it was for the higher frequencies, but never knew exactly why. An easy way
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Clint, VE3CMQ <ve6cmm@...>
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#37079
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Re: Coil 3.72 software
Latest? version? is? now? 3.78 Note? when u? ?go? from? 7? mhz? to? say? 28 mhz...? (for? a? given? inductance)? ?the? XL? will? increase? by? a? factor? of? 4,? since?
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Jim VE7RF
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#37078
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Re: PSUD2 - last updated 22/11/2019
oops.? That? shoulda? read Version 2.10.0 Jim? VE7RF
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Jim VE7RF
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#37077
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Re: PSUD2 - last updated 22/11/2019
LATEST? VERSION? IS? 3.78 Jim? VE7RF
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Jim VE7RF
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#37076
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PSUD2 - last updated 22/11/2019
Latest? version? of the? infamous? PSUD2 is? superb,? very? accurate results.....and a host? of new? user? friendly? features. http://www.duncanamps.com/psud2/index.html Jim? ?VE7RF
By
Jim VE7RF
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#37075
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Re: Plate blocking caps YC156
In the 70s, toured US Naval Radio Station, Oso, WA (aka "Jim Creek"). At the time, they were pushing 1296A into 0.456¦¸ (766 kW). They dump the waste heat into Jim Creek. We were told that the creek
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Bryan
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#37074
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Re: Plate blocking caps YC156
Yeah, that would be a lovely thing to see. Biggest I've seen here is MW AM broadcast station 6WA, on 558kHz. 100 miles East of me. It was 50kW and it was a walk in transmitter. As a young lad, I got
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Alek Petkovic
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#37073
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