Did you miss where I said "When 'pick up the component in your hand' qualifies as 'abuse', you have an issue"? Again, the point is that they require extreme protection. Tubes don't. In my previous e
Anti-static maps are always a good idea, when working with solid state devices. I buy mine on eBay, and prefer the ones made by the Velleman because they have a nice white surface. They are not expen
Cathy, I have a tube with handles that actually heats the basement in the winter just idling! I wonder if there's any transistor that can do that? I know one thing, if I ever build a SS amp, it will
It's fun to see you quarreling, once again, over the "are tubes or transistors better" question! I thought this had been about settled, back around 1960 so or... When you handle them, do you have an
It's fun to see you quarreling, once again, over the "are tubes or transistors better" question! I thought this had been about settled, back around 1960 so or... And in this regard I must have missed
Ah, Wise move on your part, Manfred. I wouldn't wear it either! Your former boss needed higher level Technical Support! Jim Sent from my iPhone _______________________________________________ Amps ma
Speaking of high resistance mats, an interesting property is that the resistance between any two points on the map is the same, no matter the distance between the points. In other words, it doesn't m
-- ORIGINAL MESSAGE --(may be snipped) REPLY: Both tubes and transistors each have their own protection requirements. Treating a transistor like a tube or vice versa is asking for trouble. For one, t
-- ORIGINAL MESSAGE --(may be snipped) REPLY: Manfred, Manfred, Manfred. Wrist straps and anti-static mats are always grounded through a high value resistor, one meg or more. You are safe. 73, Bill W
-- ORIGINAL MESSAGE --(may be snipped) REPLY: A MOSFET should never be placed on a metal surface in the first place. Either keep it in it's original anti-static bag or on an anti-static mat. Nothing
It depends on the tube as to if it is going to be damaged by dropping on the floor. Some tubes are very fragile while others can handle a whole lot of mishandling. Glen, K9STH Website: http://k9st
-- ORIGINAL MESSAGE --(may be snipped) REPLY: The internal structure of a tube is very fragile, even if the glass or ceramic doesn't break. Even if the tube appears to work afterwards, something may
Disagree. Don W4DNR Speaking of high resistance mats, an interesting property is that the resistance between any two points on the map is the same, no matter the distance between the points. In other
I just tested the anti-static mat in front of me with an ohmmeter, and was amazed to see the resistance was not linear with distance. The mat was on an insulating surface, and with the probes as clos
In Jim's post there were five assertions of fact, one opinion, one typo and a polite closing. Was Don disagreeing with some or all of them? Al AB2ZY ________________________________________ From: Amp
Doug, I agree that those numbers sound low for an ESD mat, but I'm not surprised that the values of the two measurements were about the same. The thickness of the mat complicates the results when the
It's fun to see you quarreling, once again, over the "are tubes or transistors better" question! I thought this had been about settled, back around 1960 so or... When you handle them, do you have an
Unless you have a perfect conductor under or part of your conductive mat, there will be differences as the mat is probed with a Fluke. Don W4DNR In Jim's post there were five assertions of fact, one
You're partly right, Don, but only because a real mat always has some thickness and isn't always very large compared to the probe spacing. But even in that case, the difference in measurements isn't
What if you didn't increase the width along with the length? IOW, We go from 1 CM^2 to 1CM by 1 Meter (10 Cm) would the same hold true. 1 Cm X 1CM is the same scale as 1 M X 1 M. It's the size that's