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Author Topic: 3-400Z No Parasitic Supressors  (Read 12632 times)
W1BR
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« Reply #15 on: March 28, 2015, 09:37:35 AM »

Tom, Carl,

Surely you both know that nichrome is the universal panacea for all ills? Infallible in preventing hurricanes, good for babies in teething, prevents all instabilities and turns lead into gold.....and has its very own physical laws applicable to it, unlike other materials..

Enough nichrome wire and you can make toast!
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W8JI
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« Reply #16 on: March 28, 2015, 10:37:24 AM »

To heck with copper bracelets. I'm going to market nichrome woven socks and arm bands for people with arthritis and joint pain.
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AH6RR
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Posts: 846




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« Reply #17 on: March 28, 2015, 11:38:00 AM »

Too Late Tom I just applied for the Patent  Grin Thanks for the good laugh guy's I needed that.
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AH6RR
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« Reply #18 on: March 28, 2015, 11:43:14 AM »

Oh man I just heard from the Patent Office some one by the name of Richard Measuringcup had applied for it last year. Next thing I guess will be Copper head bands to ward off .....................................................................
Here it comes...





Stupidity?  Roll Eyes
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KD0REQ
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Posts: 2390




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« Reply #19 on: March 28, 2015, 12:17:13 PM »

tinfoil shorts, good.

titanium shorts, better.
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KM1H
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« Reply #20 on: March 28, 2015, 01:49:48 PM »

Ford Fusion Titainium even better.
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G3RZP
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« Reply #21 on: March 29, 2015, 02:42:45 AM »

Do titanium spectacle frames have the same effect?
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W8JI
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« Reply #22 on: March 29, 2015, 07:48:20 AM »

Do titanium spectacle frames have the same effect?

They are so good they fixed my blind eye, and now it is so good can see through bikini bottoms!
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G3RZP
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« Reply #23 on: March 29, 2015, 09:08:07 AM »

I can't have the right sort of titanium in mine, then!
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K5WLR
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Posts: 311




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« Reply #24 on: March 29, 2015, 12:44:15 PM »

They are so good they fixed my blind eye, and now it is so good can see through bikini bottoms!

Sorry to burst your bubble, Tom, but there just isn't much to bikini bottoms these days; 'tis not your glasses.  Roll Eyes
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KB4QAA
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« Reply #25 on: March 29, 2015, 01:53:20 PM »

When using ferrite beads on the plate and grids leads did you use mixes for VHF and above?

bill
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KA0HCP, ex-KB4QAA Relocated to Ks. April 2019.
W8JI
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« Reply #26 on: March 29, 2015, 02:58:03 PM »

When using ferrite beads on the plate and grids leads did you use mixes for VHF and above?

bill

You'd have to pick the material based on application.

Ferrites can have a somewhat fast slope from mostly inductive into mostly resistive. A 67 mix, for example, start to increase in resistive part of impedance around 30 MHz and is all in at 120-150 MHz. The problem is Q doesn't generally get that high down low, where you want it to be lossless.

You really have to look at the circuit and how the tube behaves.

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W1BR
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« Reply #27 on: March 29, 2015, 10:05:23 PM »

Tom, does core saturation entered into this equation?

Pete
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W8JI
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« Reply #28 on: March 30, 2015, 05:53:13 AM »

Tom, does core saturation entered into this equation?

Pete

In amateur use, heat is almost always a much larger problem than saturation. There is a temperature where cores just lose their magnetic effects, with many types never recovering. I very often see people incorrectly call core heating "core saturation" when it almost never is, unless the mode is a really low duty cycle.

A person would have to look at the loss tangent vs reactance slope as well as the core's thermal limits.

Sticking a random experimental core near the output of a 500-1500 watt air heater, just to hope it loads the circuit at 100-200 MHz and not at HF, is probably not a good idea. It's tough enough to get the heat out of a core in cool environments.
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W3RSW
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« Reply #29 on: March 30, 2015, 06:44:44 AM »

Few machines will past that Turing Test.
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Rick, W3RSW
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