As part of the development of EMIR, an infrared multiobject spectrograph for the Gran Telescopio de Canarias (GTC), the OPA350 operational amplifier is being successfully used at cryogenic temperatures (77K). The use of off-theshelf electronics (not specifically designed for cryogenics) is advantageous since it allows us to get signal amplification very close to the detector without the need of...

One potential advantage of the application of superconducting materials in electrical machines is the possibility to build lighter and compact devices by removing iron. These machines find applications, e.g., in systems where cryogenics is already available, or in naturally cryogenic environments. The design of motors with high temperature superconductors (HTS) presents issues unconsidered in c...