开云体育

Thanks for the kind offer, Tom. A trusted friend and amp builder suggested a simpler fix..toss the feed through & replace it with a rubber grommet, solder the wire directly to the glitch resistor.

Thanks Jim, I agree with your assessment. I replaced the feed through with a rubber grommet and soldered the HV wire directly to the glitch resistor. That seems to work fine business. Thanks, Robin

In Kentucky, the Electrical Code (as applied) specifies the last (or first) cabinet or bay wherein the Neutral and Ground both appear prior to the entranceway or distribution panel, be bonded. While I

“From that point out, the NEUTRAL and the GROUND conductors, are always separate conductors. They are NEVER (or shouldn't be) tied together anywhere else in the system”. I think I said

That's caused by....'surface creep'..... which will also depend on any dust/gunk / fluff sitting on the insulator.? ?The insulator can be cleaned up. The easy fix is to put a small piece of plastic

That pointy end of the wire probably doesn't help. The ceramic feedthru from a Heathkit SB220 would probably work. Never seen one arc.

This reminds me of my automotive days. Anything, I mean anything not right with the ceramic insulator on a spark plug will cause a misfire. Same thing is possible here. Bob W4JFA [email protected]>

Robin- I may have a longer ceramic insulator that would fit your needs. Tell me how long it should be and I will check the junk box. Tom K0SN [email protected]> wrote:

Seymour probably used the amp also on 20m where I met him most on the long path. We were talking about using the same tube in our amps. 73 Peter, DJ7WW -----Original-Nachricht----- Betreff: Re:

Nothing to do with tubes. ?Remove ceramic and inspect it. ? Sent from the all new AOL app for iOS

There could be a hairline crack in the ceramic. ?Needs to be take apart and checked to see if the arc was internal to the feed thru. Sent from the all new AOL app for iOS

Yes, these are the notions I've had about the remedy; maybe make an insulator from a solid rod of fiberglass or Teflon with a recess in one end to surround the bolt/nut/solder lug. Thanks Eric!

I can't tell if the break-down happened because of a defect in the insulator, or if corona from a sharp edge degraded the insulator. Either way, the insulator should be replaced as it will be

Not sure about country of origin, but the tubes were acquired from Command Technologies. I don't know what the tubes would have to do with it...the arc is prior to the tubes in the circuit. Thanks,

New tubes made in China maybe? -- Steve Hearns [ KA2PTE ] Technotronic Dimensions, VT [USA] WWW.TECHNOTRONIC-DIMENSIONS.COM E-Mail: Steve@...

I'd like to know if any of you have suggestions as to what caused this HV arc to chassis and hopefully, what to do to prevent it in the future. Amp is a TenTec Centurion. It was at idle when the arc

Jim, I snapped a pic of the bandswitched input network. You can see the 40M toroid has been overheated, I recall that was the band W6CCP used it on. Note the red paint applied to the mica cap tuning

I guess efficiency and IMD will improve with 6500V at the anode, but 10m will be difficult to tune and on 160m the Gates inductor might be too small in inductance. Mine is run at 4800V, 10-160m on any

Reid, can you safely put 6500 vdc (loaded) on a 3x3 tube ?? ?What about IMD with that voltage ?? ?Most folks are getting 68% eff on the lower bands (160-30m)....with 4800-5500 vdc loaded...and a

In the case of the Hallicrafters S-38 and many many others, the chassis was on one side of the AC line, which could have been hot or neutral depending on how the (non) polarized plug was inserted into