https://www.newark.com/metcal/mx-ds1/desolder-hand-piece/dp/41B5513
Oh... yeah. And tweezers too. And custom heads for DIP8/14/20, etc... and all the cleaners and... and...
mnem
A kings ransom to pay for them too?
I find that winding the temperature up a bit and adding a load of fresh solder helps a lot when working with large ground planes.This is mostly for those playing along at home:
Yeah, that seems to be a common misconception here and everywhere soldering is discussed. There is a huge difference between cranking up the temperature vs delivering more heat. There is a reason we have big wide chisel tips with lots of mass and contact surface and tiny conical tips to reach tiny spots and almost every variant in between, even with conventional soldering irons. While you can make do by cranking up the heat on a smaller iron, it really is not the right way to do it, and often results in burning the substrate and lifting traces because right at the contact point you are delivering much too high a temperature to the work.
The difference with MetCal/SmartHeat and similar HF/inductive heating technology... and it really is something that has to be experienced to understand... is that it consistently delivers much more quantity of heat in a smaller tip than any resistive element iron is physically capable of doing.
You really do get a quantum level higher performance for your money.
The question then becomes one of budget vs need (or in my case, very limited space in my workbench bag) ; there simply is no question that if you can spend it, MetCal is worth every penny.
mnem
Whoa, Spec.... that's kinda like deja vu'... kinda like deja vu'...
Nah, thats just Groundhog Day, when said he was having trouble measuring ESR etc, they were in circuit, I've had that scenario, but removing and suddenly things change, hence the question
No, I was talking aboot the fact you double-quoted me here:
https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/msg3689017/#msg3689017
and figured you might wanna trim the excess mnem.
mnem
pack a lunch; there's a lot to trim, and you'll be at it for a while...
https://www.newark.com/metcal/mx-ds1/desolder-hand-piece/dp/41B5513
Oh... yeah. And tweezers too. And custom heads for DIP8/14/20, etc... and all the cleaners and... and...
mnem
A kings ransom to pay for them too?
I find that winding the temperature up a bit and adding a load of fresh solder helps a lot when working with large ground planes.This is mostly for those playing along at home:
Yeah, that seems to be a common misconception here and everywhere soldering is discussed. There is a huge difference between cranking up the temperature vs delivering more heat. There is a reason we have big wide chisel tips with lots of mass and contact surface and tiny conical tips to reach tiny spots and almost every variant in between, even with conventional soldering irons. While you can make do by cranking up the heat on a smaller iron, it really is not the right way to do it, and often results in burning the substrate and lifting traces because right at the contact point you are delivering much too high a temperature to the work.
The difference with MetCal/SmartHeat and similar HF/inductive heating technology... and it really is something that has to be experienced to understand... is that it consistently delivers much more quantity of heat in a smaller tip than any resistive element iron is physically capable of doing.
You really do get a quantum level higher performance for your money.
The question then becomes one of budget vs need (or in my case, very limited space in my workbench bag) ; there simply is no question that if you can spend it, MetCal is worth every penny.
mnem
Agreed, but the point is that by using a larger chisel or K type tip which has a higher thermal mass, with fresh solder applied to it and then applied to the pad and even more solder added as needed to form a pool of liquid solder to transfer the heat across a larger area of the pad, it prevents the delamination. Transferring too much heat could disturb other connections on the pad of you're not careful.
https://www.newark.com/metcal/mx-ds1/desolder-hand-piece/dp/41B5513
Oh... yeah. And tweezers too. And custom heads for DIP8/14/20, etc... and all the cleaners and... and...
mnem
A kings ransom to pay for them too?
I find that winding the temperature up a bit and adding a load of fresh solder helps a lot when working with large ground planes.This is mostly for those playing along at home:
Yeah, that seems to be a common misconception here and everywhere soldering is discussed. There is a huge difference between cranking up the temperature vs delivering more heat. There is a reason we have big wide chisel tips with lots of mass and contact surface and tiny conical tips to reach tiny spots and almost every variant in between, even with conventional soldering irons. While you can make do by cranking up the heat on a smaller iron, it really is not the right way to do it, and often results in burning the substrate and lifting traces because right at the contact point you are delivering much too high a temperature to the work.
The difference with MetCal/SmartHeat and similar HF/inductive heating technology... and it really is something that has to be experienced to understand... is that it consistently delivers much more quantity of heat in a smaller tip than any resistive element iron is physically capable of doing.
You really do get a quantum level higher performance for your money.
The question then becomes one of budget vs need (or in my case, very limited space in my workbench bag) ; there simply is no question that if you can spend it, MetCal is worth every penny.
mnem
Agreed, but the point is that by using a larger chisel or K type tip which has a higher thermal mass, with fresh solder applied to it and then applied to the pad and even more solder added as needed to form a pool of liquid solder to transfer the heat across a larger area of the pad, it prevents the delamination. Transferring too much heat could disturb other connections on the pad of you're not careful.
It's this part that's not always true.
While that is the tactic, and one hopes for it to work that way, it doesn't always.
That's why it is much better to have a larger mass of metal (the big honkin' chisel tip) at the correct lower temperature than to try and make do with a smaller or lower wattage iron and try to crank up the temperature.
The difference with the Metcal, etc HF/inductive heating tech is that it can deliver quantity of heat at the correct lower temperature in a smaller tip equivalent to that of a larger higher wattage iron; this is a huge help when trying to do stuff like SMD work on large copper fills and the like.
What I'm talking aboot here is using the right tool for the job and not making a habit of using the "hold onto your butt and make do" tactic and hoping it works every time.
There's a reason why I still keep a 150W Weller GT7 (temp-controlled gun) in a quick-draw holster under my bench; the MetCal makes it so I don't have to reach for that big bruiser nearly as often.
mnem
Yeah, that seems to be a common misconception here and everywhere soldering is discussed. There is a huge difference between cranking up the temperature vs delivering more heat. There is a reason we have big wide chisel tips with lots of mass and contact surface and tiny conical tips to reach tiny spots and almost every variant in between, even with conventional soldering irons. While you can make do by cranking up the heat on a smaller iron, it really is not the right way to do it, and often results in burning the substrate and lifting traces because right at the contact point you are delivering much too high a temperature to the work.
Yeah, Cerebus expounded in great detail on the joys of dev work with a Source Measure Unit when he bought his, but eevBlog search is being a complete useless whiny bitch today.
If you are going to play "What is it" try this one. Its a part I have and yes that is an SMA connector on the end.
Yeah, Cerebus expounded in great detail on the joys of dev work with a Source Measure Unit when he bought his, but eevBlog search is being a complete useless whiny bitch today.I don't have a SMU. I might have been talking about using the HP 66312A as a poor man's SMU, which it does a fair job of.
I don't watch yootoob vids as a rule, so I'll merely note that RF spectrum analysers traditionally start at 9kHz, presumably because of EMI/EMC regs.
After finally switching it on I found that I only had 4 digits worth of measurement followed by what must be "NC".
If you are going to play "What is it" try this one. Its a part I have and yes that is an SMA connector on the end.
Antenna with preamp?
It looks like it's got 2 distinct "ports" / tubes to let the air in. And it's Robert so unless he is pervert and is on purpose trying to mislead us, then it's probably an aircraft part. So.. some sensor in an aircraft that takes air in. But it's not an air speed / Pitot tube sensor. So.. maybe a sensor for an altimeter ??
If you are going to play "What is it" try this one. Its a part I have and yes that is an SMA connector on the end.
Antenna with preamp?
It looks like it's got 2 distinct "ports" / tubes to let the air in. And it's Robert so unless he is pervert and is on purpose trying to mislead us, then it's probably an aircraft part. So.. some sensor in an aircraft that takes air in. But it's not an air speed / Pitot tube sensor. So.. maybe a sensor for an altimeter ??
Not an antenna or pressure sensor. It is a sensor and gas flows through it. A DMM or megger on the SMA reads open circuit.
If you are going to play "What is it" try this one. Its a part I have and yes that is an SMA connector on the end.
Antenna with preamp?
It looks like it's got 2 distinct "ports" / tubes to let the air in. And it's Robert so unless he is pervert and is on purpose trying to mislead us, then it's probably an aircraft part. So.. some sensor in an aircraft that takes air in. But it's not an air speed / Pitot tube sensor. So.. maybe a sensor for an altimeter ??
Not an antenna or pressure sensor. It is a sensor and gas flows through it. A DMM or megger on the SMA reads open circuit.
Not an antenna or pressure sensor. It is a sensor and gas flows through it. A DMM or megger on the SMA reads open circuit.
Nope,
Inside there is just a rod soldered to the center of the SMS and a nickel foil lining the inside of the brass body.
The kicker is the surface of the foil is nickel 63 10mCi worth. This one is missing the foil as it needs a licence.
It's aan electron capture detector ECD most commonly found in gas chromatographs. HP/Agilent's lab equipment arm made a lot of similar devices. This one came from a british explosives detector. There is a tiny current caused by the Beta radiation (electrons) Moleclues in the gas flowing through can capture these resulting in reduced current.
The Ni63 foils tend to corrode and "leak". It's quite nasty. Very low energy so hard to detect but if it gets into the body all the energy is dumped into cells.
You coud take this apart and nver know.
https://www.newark.com/metcal/mx-ds1/desolder-hand-piece/dp/41B5513
Oh... yeah. And tweezers too. And custom heads for DIP8/14/20, etc... and all the cleaners and... and...
mnem
Yeah I understand and one day, if I can afford one, I'll get a Metcal, in the meantime, I have to use what I have and I have seen the method I describe used by others. I'm not talking about massively higher temperatures, but as you know, the T12 system does incorporate a quick boost function for those larger joints and that is what I use and it works fine. I have delaminated pads before with my old Hakko clone, same as this one, but I have not had that problem with the T12 and boost function and I have made good joints onto solid ground planes of 200 x 260 mm with no problems.
Besides, everyone needs a break once in a while from our TEA and exploring things warm and soft is infinitely more interesting.
For a moment I thought it was Dwagon writing, you surprised me !
The dwagon and med6753 do have more in common than one might think.
I don't know whether to take that as a insult or compliment...
mnem
"I'm only a asshole on Thursdays. Rest of the time I'm a whole ass." ~me, immediately after the line-dancing incident
Ditto.*hands med a hatchet, while slinging a shovel over his own shoulder*
"Walk with me..."
mnem
Life's too short for grudges...