3.3 HIGH/ULTRA-HIGH VACUUM PUMPS
It is now increasingly common to have high-vacuum systems based on turbomolecular pumps (TMPs), turbomolecular pumps + cryosurfaces, or cryopumps. Diffusion pumps...
3.2 VACUUM PUMPS (ROUGH-MEDIUM VACUUM RANGE)
3.2.1 Oil-sealed Rotary Pumps
Such pumps are gas-transfer pumps. They are used extensively both to back high-vacuum pumps and to act as devices for...
3.1 INTRODUCTION
Vacuum pumps, either singly or, more usually, as part of a pumping system, create and maintain the conditions appropriate to a required process. Each of the types of vacuum pump...
With pumping speeds from 170 to 900 L/min, a line of oil-free pumps for vacuum ovens and dryers contain pistons that are suitable for roughings and backing of turbo, cryo, and ion pumps. The...
Besides the PN diodes that we studied in the last experiment there are many more types of diodes. Each one is used in applications that can take advantage of its behavior and...