Screwtube would not let me add comments like these to Carlsons channel even though many of his viewers were looking
for sources of parts, kits or completely assembled probes. (My comments just got deleted after a few minutes...)
Are you sure it was youtube and not him? I'm pretty sure the design for this was something he always promoted as a patron benefit... so may not want people selling kits and promoting them on his channel.
Differences in a schematic for the Superprobe has your R2, R5 as 1kΩ not 15kΩ.
The Superamp C5 is located on the output to the probe, after your light bulb. C3 is 0.1uF you have 4.7uF feeding the LM4781 input.
Check the pinned comment, I certainly would not say that's open sourced. The design files are a Patreon perk.
Perhaps the concept is public domain? If so then design your own variant and sell that and put your own name on it, not someone else's.
@carlespy7470
5 months ago
Hi, Mr. C - I would like to build your Super Probe but there is no way I could DIY a PCB. Is it possible to build it successfully with point-to-point wiring?
1
Mr Carlson's Lab
@MrCarlsonsLab
Yes you could, this project has been open sourced, so if you look around on the internet, you will find many different versions of it.
His capacitor leakage tester is not open-sourced that I know of.
I find it's better to have less or controllable gain and higher input impedance from a JFET.
I had done an LTSpice sim and the voltage gain is extremely high for the Superprobe alone (no audio amp gain), around 660 and it clips with 1mV input.
… They are available on eBay (a dirty word on screwtube) and on my website.
…
Screwtube would not let me add comments like these to Carlsons channel even though many of his viewers were looking
for sources of parts, kits or completely assembled probes. (My comments just got deleted after a few minutes...)
This thread is not intended to be an advertisement for these kits but rather a discussion area for anyone who has built them. But I also find that the rules in the Buy/Sell/Wanted section are vague, arbitrarily applied, and come without warnings. I have been a forum member for going on 10 years, but I have not posted there (B/S/W) for fear of being banned.
I happen to like his Super Probe concept. But the original PCB design with 0602 SMD components was a daunting build. Others created more reasonable 0805 PCB designs opening the project to to more amateur kit builders. The design is 6-7 years old now, and he has a newer design in the works, but the old one is just really popular!
So what's this for, hunting for ghosts?
People really think there’s a make-or-break difference in difficulty between 0603 and 0805?!? I can’t decide whether the smiley or the one is more appropriate here.
It's difficult to discuss Mr. Carlson's custom test gear inventions - he rolls them out, there's no schematic etc. unless you are a Patreon subscriber. It's a strange way to earn revenue, instead of him offering kits or finished boards. In time, docs leak out... so IP theft happens, as he's trying to keep it exclusive I guess.
People really think there’s a make-or-break difference in difficulty between 0603 and 0805?!? I can’t decide whether the smiley or the one is more appropriate here.
Maybe other aspects of the PCB layout make a real difference in assembly difficulty. But surely the size of passives isn’t one of them.
Me, I actually prefer 0603 because of the aspect ratio.
Regardless, SMD soldering is now an absolutely inescapable part of electronics, and I can’t say I have much sympathy for people who don’t want to learn it. It’s not that hard.
It's difficult to discuss Mr. Carlson's custom test gear inventions - he rolls them out, there's no schematic etc. unless you are a Patreon subscriber. It's a strange way to earn revenue, instead of him offering kits or finished boards. In time, docs leak out... so IP theft happens, as he's trying to keep it exclusive I guess.Because there is no physical product to deliver, no associated time spent for managing the assembly supplier,parts, shipping, customs, etc. No need to deal with returns and asshole buyers. Would you rather managing licenses vs physical product?