Is it a right link to the video? I am asked to sign in
My Hakko heater element is a celebrity now.
Its from my old thread when discussing the topic about "fake vs genuine" Hakko 936 parts, like the heater -> Here , and the tip -> Here
Example photo of genuine vs fake, top is genuine one, while last two are dodgy ones.
Click to enlarge picture.
I was thinking... Is it possible to adapt the new tips to an old station? i mean a handle stick for new tips.
the tecnology inside is the same: resistence and sensors... if the sensor is the same...
it could be useful to exchange an old-style handle with a new style in the same station ... the old tips are cheaper, and they are great for dirty jobs, the new ones can be used for more precise jobs
i just contacted Aoyue eu. And told them about the nice EEVblog coverage related to soldering technologies.
In my opinion the best if not the only in depth / informative series on soldering.. and more to come
So i told them the only thing missing is in the comparison is an Aoyue product and that i couldn't find any reviews of their soldering iron with the new tech. like the 2901 and the digital 2900....
Asking them if they would consider sending one to David for review...
Will see what their answer is
for anyone wondering to what device i'm referring to:
http://www.aoyue.eu/aoyue-soldering-hotair-rework-desoldering-station-preheater-repairing/aoyue-adjustable-digital-station-lead-free-soldering-iron/aoyue-int2900-digital-lead-free-soldering-station-smd-soldering-iron-wq-serie.html
When using a "circuit equivalent" of the solder iron to explain the heat transfer, wouldn't it be better to model the air gap between heater and tip as additional capacitance? After all, when applying constant heat with the cartridge, the tip will react to it with a delay. I think this also better explains the time-lag of temperature regulation.
Isn't there any high temperature thermally conductive paste to transform this "old" technology into the new one?
Isn't there any high temperature thermally conductive paste to transform this "old" technology into the new one?
The resistance is sufficient to explain why the tip can be cooler than the readout temperature. A capacitance by itself wouldn't do. A capacitance represents the thermal mass of the components such as the heater or the tip. That can capture the ability of the tip to store heat and the recovery time after you remove the iron before it can heat back up.
The resistance is sufficient to explain why the tip can be cooler than the readout temperature. A capacitance by itself wouldn't do. A capacitance represents the thermal mass of the components such as the heater or the tip. That can capture the ability of the tip to store heat and the recovery time after you remove the iron before it can heat back up.With a purely "resistive" model, the tip would always be colder than the temperature at the point of measurement, by a fixed (or maybe proportional) amount. I understand that. This can be handled by defining an offset temperature. But it does not explain the delay in regulation, and why the Hakko does not go into full-power mode when the temperature drops too low (which it should when soldering on a big ground plane).
The resistance is sufficient to explain why the tip can be cooler than the readout temperature. A capacitance by itself wouldn't do. A capacitance represents the thermal mass of the components such as the heater or the tip. That can capture the ability of the tip to store heat and the recovery time after you remove the iron before it can heat back up.With a purely "resistive" model, the tip would always be colder than the temperature at the point of measurement, by a fixed (or maybe proportional) amount. I understand that. This can be handled by defining an offset temperature. But it does not explain the delay in regulation, and why the Hakko does not go into full-power mode when the temperature drops too low (which it should when soldering on a big ground plane).
TuxKey, I’ve been using Aouye 2900 since 2010, bought in the UK from an established channel, as were the tips. I’ve a suspicion Aoyue is moving forward in a different direction to the 2900. Years ago I read somewhere a claim the 2900 was based on a Hakko design. The tips are not mechanically compatible with the Hakko T12 tips, lacking the ridge that the Hakko ones have half way up the shaft.
I’ve used two Aoyue 2900, they have been value for money but not without issues, like others the firmware is not totally honest on the instantaneous tip temperature. The Aoyue iron I don’t have access to now would very occasionally ‘crash’ requiring a power cycle.
The bits only have two connections despite some having a third ring. I did not expect the variation in the cold resistance the tips, I have a suspicion some were intended for a different product, most are about 8 ohm a few 11 ohms, but one is 6 ohms. Hakko tips seem to be 8 ohm +/-10%.
The Aoyue firmware I’ve seen lacks a timeout if its unused for a while, at least one person has written their own code.
I got interested in increasing the power to speed up the warm up and recovery, its not running hotter just getting to temp faster and even better for ground planes. Ended up running it up to about 160W, the test software is labVIEW, external PSU and hardware. There is still a time constant limitation in the Aoyue Tips that I’ve not explored, doubling the available power was a bit disappointing. I’d need to dissect the tips and look at the thermal design of how the coils (?) are wound etc.
The Bakon BK950D appears to use clones of the Hakko T12 tips rather than the Aoyue:
https://www.eevblog.com/forum/chat/bakon-bk950d-soldering-station-my-opinion!!/
i just contacted Aoyue eu. And told them about the nice EEVblog coverage related to soldering technologies.
In my opinion the best if not the only in depth / informative series on soldering.. and more to come
So i told them the only thing missing is in the comparison is an Aoyue product and that i couldn't find any reviews of their soldering iron with the new tech. like the 2901 and the digital 2900....
Asking them if they would consider sending one to David for review...
Will see what their answer is
for anyone wondering to what device i'm referring to:
http://www.aoyue.eu/aoyue-soldering-hotair-rework-desoldering-station-preheater-repairing/aoyue-adjustable-digital-station-lead-free-soldering-iron/aoyue-int2900-digital-lead-free-soldering-station-smd-soldering-iron-wq-serie.html
The real deal is how the tip was built + fit into the heater rod "optimally".
Aoyue, Quick and those Chinese soldering iron manufacturers are basically started their business by cloning Hakko 936.
Until nowadays, I don't see many reviewers review the tip technology involved.
Say using FX-888D (same heater & tip as Hakko 936), using the real tip vs dodgy one is pretty obvious, don't need to scientifically test them, you can instantly feel the difference between genuine tip vs 1 dollar tip.
As above close up photos, the genuine one has a proper copper insert or maybe coating ? While the 2nd dodgy one, the hole is off center and has a tiny crack (if you look carefully), while the 3rd one is basically hopeless, its made from steel with no copper inside what so ever.