Bad resistors

That was my first thought.

Best regards, Spehro Pefhany

--
"it's the network..."                          "The Journey is the reward"
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Reply to
Spehro Pefhany
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Could be solid bone as well. Only his Veterinarian knows for sure.

Reply to
JW

Aaagh! Don't do it. If you succeeded, we'd see the electronics market flooded with deliberately incorrectly marked resistors from China.

;)

Sylvia.

Reply to
Sylvia Else

--
Wow!  < +/- 100µohm ?
Reply to
John Fields

up

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was

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What an idiot. My fluke 189, with 1% 100 Meg resistors... answer

100.2 Meg. Input impedance is only 10Meg. No problems. Why do you bother posting here?

George H.

Reply to
George Herold

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and lots more.

GR had tube-based meters that would measure gigohms.

John

Reply to
John Larkin

Extech makes nice stuff. I think FLIR bought them to keep them from introducing a competitive IR imager.

John

Reply to
John Larkin

You're an idiot. It ids baked enamel. If the color has changed, the part has been subjected to too much heat.

You ain't real bright.

Reply to
DrParnassus

Looks like you also have a scat fetish.

Reply to
DrParnassus

That should be where their other clue comes from, because the readings are typically not repeatable.

Reply to
DrParnassus

days ago?

Nope.

Why don't you f*ck off and die, and stop accusing me of not having one? Do the f*ck off and die part first, however.

I worked with high value resistors every day for over a decade, and I am fully aware of all the ways that error can be introduced into such a reading. You obviously are not.

My skills surpass yours.

Reply to
DrParnassus
[Where AlwaysWrong was AlwaysWrong mysteriously disappears]

^^^^ Admission you have a scat fetish noted.

Reply to
JW

Which means that we can be certain that you will never grasp it.

Reply to
DrParnassus

But not accurately.

Reply to
DrParnassus

AlwaysWrong strikes again!

One of 85 pages worth that are in stock for 27 cents each:

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Reply to
JW

Total bullshit.

Extexh did not nor does not have the expertise to make an IR imager.

I worked for an IR instrument maker, and FLIR buys calibration equipment from them, and never felt threatened by our IR imager, which has been around since before extech even existed.

Raytheon or Square-D is a bigger threat in that market, and I am sure that FLIR has no worries about them either. FLIR has a main market niche that nobody encroaches on.

Extech was NEVER a player in IR and especially not ANY military IR, and any gear they did carry, they bought elsewhere and put their name on it.

You're a goddamned idiot, as usual.

Reply to
DrParnassus

But they are, to a fraction of a per cent. In the case of the carbon film resistor, I can hold the resistor body and see the resistor TC effect, also repeatable. High-ohm resistors do tend to have bad TCs.

There is nothing different between using and measuring a 10K resistor or a 10M resistor. Or, assuming a little basic cleanliness, a 10G resistor.

We recently needed a 100M metal-film resistor to use in a photodiode TIA thing. We tested a bunch of thickfilms and all had too much excess noise; the testing itself is a nuisance. We settled on some axial RC07 types, 50M 1% metal films from Dale Vishay, about $4 each. We put two in series with a mid-air-soldered series connection, floating above the surface-mount parts on the board so's not to waste all that board area.

Dale says they're expensive because hardly anybody buys them.

Too bad about the noise. A single 0603 100M thickfilm would have been cheap and a lot less hassle.

John

Reply to
John Larkin

So do people describe you as dull, humorless and quick to use childish insults like "dweeb"?

Reply to
Cydrome Leader

ing up

s.

gs

Was this 1/f noise? Noise that only showed up when you drove some current through them?

George H.

Reply to
George Herold

No, idiot. You are the second case of others mentioning it, that I have noted in the very next post.

You are on the lits! (intentional sp)

Bwuahahahahahaha

It had nothing to do with me, JW, Mr.scatboy. Bwuahahahahahaha!

Reply to
DrParnassus

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