sorenb

Have some from PCBNet, 1.6mm and 3oz. Anyone who wants to build the Transconductance amp and post a few pics here, can have a set or two. Promise to show a few pics of the build here, and I'll cover the shipping as well 😉

I do

No 0,5 C°/W per channel will do if you go with stock values

Finally got around to finalize my Megatron, fitted into one chassis with GRHV.

continuing like that, you soon end up wearing a beret, eating fois gras, smoking two packs of Gauloises each day and driving a Renault 4, while complaining about the englishmen ...

you might check the current sources:

I might have two sets I want to depart with 2mm/4oz

<10V offset isn't a problem. Engaging the servo should quickly get you <1V

lower the tail resistor by some ~50ohms and re-adjust

seeing only a few people have signed up for Carbon boards. I have some version 6g from PCBNet 2mm/3oz, that I don't mind departing from (16.75USD/ea). If interested shoot me a PM.

....same source as for the other 10m90's in your build?

where did you get those 10m90's from?

unless you've got bad 10m90's (I've never come across any) I find it peculiar that both seems to be acting up pull out one 10m90 and test it with a DMM at ohms, test drain-source: short all legs, before measure drain-source => very low ohms if you don't get that the 10m90's are probably bad if you have a breadboard you might find it useful to build a cascoded css including the trimmer, and test as previously described. If you can't adjust the current using the trimmer, the DN2540 is probably bad (I've seen that a few times) Or you can use an 8pin IC-socket with resistors+trimmer soldered to build a bug-style test CCS-fixture. .