HV Power supply
This PSU was made according to Lindsay’s PSU here: 40-400V, 20W power supply. I would like to thank for the writing of that great howto.
Glass working lathe
One of the most important tools for working with glass will be glassworking lathe. I decided to build one by myself, commercial solutions are too expensive or aren’t available.. It will consists of four ball bearings, two dc motors, one linear bearing, several aluminum profiles and some minor parts.. Synchronizing of the chucks will be […]
High-vacuum stopckocks
After some unsuccessful experiments with common (non-vacuum) stopckocs, valves, etc., I finally decided to use stopcocks designated for high vacuum. I found some on eBay for $25/piece. I applied a vacuum grease, set up an simple vacuum system with hoses and tried it. The stopcock is pretty vacuum tight, but there are still some other […]
Argon arrived
I’ve finally got an argon bottle, 1.3m³ of pure argon (99.996%) pressed in 8l bottle. It is pretty heavy 😉 The argon was chosen because it is has similar features to neon, but is much cheaper and – the most important – it is available.. This image comes from Wikipedia. The argon compared to neon […]
Electronics for pirani gauge
I was working on electronic part of pirani gauge a few weeks, so there were no new posts.. I moved the system from breadboard to the plastic box, added display and microprocessor. Measurement and control of the display is based on arduino. I am not going to describe the function of pirani gauge, there is […]