Archive for June 2023

IRT-3000 IR Microscope Pics

I picked this up at auction cheap because it looked entertaining. It’s labeled as an “Infrared Microscope” but essentially as far as I can tell it’s general used as an accessory to FT-IR 6000 series IR spectrometers.

The spectrometers have a built in detector, but can be configured to take IR light routed through the microscope. So you use the microscope built in illumination to locate the part of the sample you’re interested in on a slide. Then you can route the IR input/output through the spectrometer and possibly (I’m not entirely certain) use the detector built into the microscope while using the interferometer components of the spectrometer.

All very confusing!

Anyway here’s some pics.

JFC-1100 Sputter Coater Pics

VE7800 Filament Pics

Pfeiffer TC600 Turbo Pump Driver Notes

The TC600 Turbo pump takes a 24V input. The remote interface also uses 24V signaling. However, this is not derived from the 24V input.

Rather the TC600 seems to use a N channel transistor in combination with a UC3845, transformer and capacitor (marked 1 in the diagram below) to create an isolated AC supply which is then rectified (somewhere) and then regulated down to 24v by the marked LM317:

“caps under fuse” actually cap labeled 2 is a resistor.

Digikey CSV With almost all parts required for lower board (aside from resistors, some transistors)