M-Labs Scientific Instruments

spectropak/hvamp_proto3 at master · m-labs/spectropak A universal controller for quadrupole mass spectrometers (RGAs) - m-labs/spectropak

The amp schematics github.com/m-labs/spect...
"NTE" transistors are just rebranded and expensive Sanyo parts, but I didn't know better back then.

Among other fun stuff, I could easily plot the stability diagram of protons. Perhaps I should fish out the results from my archives and post them :)

Years ago I played with HDTV transistors and a second-hand commercial RGA tube. Designed a broadband amp with 600mA capability and 20MHz large signal bandwidth at 120Vpp and used a pair of them.

Some RF source designs for quadrupole mass spectrometers do the latter, but only at 2MHz or so (AFAIK).

Do you have references on that?
There's still the trap capacitance issue, resonant designs solve it by recycling the charge. And switching power MOSFETs above a few MHz is nontrivial.
For max efficiency, solution is perhaps square wave into a LPF loosely coupled into a LC in parallel with the trap.

Compact Ion Trap Radiofrequency Source 193thz.com/citrs.html

Bye bye GitHub. ARTIQ's new home is at git.m-labs.hk/M-Labs/artiq

You've had it with the CUPS print server? Replace it with this 36-line #NixOS hack: git.m-labs.hk/M-Labs/it-in... #Linux #SysAdmin

Just run it with encryption disabled. Not enough new projects and experiments in hamradio!

We're leaving GitHub. ARTIQ and other main repositories will be progressively moved to git.m-labs.hk

Forum post: forum.m-labs.hk/d/1070-shoul...

Pour STM32 il suffit de passer à cargo, rustc, probe-rs et co, non?

Hello Bluesky!