Depending on what units we express l and A in we get different units of r. A common way is by expressing l in m(eter) and A in mm2 r then gets the unit W´mm2/m. If we instead choose l in m and A in m2, the unit for r will be W´mm2/m, which usually is transformed to Wm. That unit often is used for non-metallic materials. If we know the value of r expressed in W´mm2/m, that value has to be multiplied by the factor 10-6 to give the value in Wm. Thus, 10-6 x W×mm2/m = 1 Wm.
Surface mount chip resistors are ubiquitous. Hundreds of billions of these devices are sold every year into myriad applications from handheld devices to precision lab test equipment to aerospace electronics and others. Chip resistors and associated technologies are discussed from the standpoints of types, functionality, device design, and applications as well as circuit design and power rating considerations.
EMC noise is a common issue related to use of electrical drives. The following article published by Electronics Weekly written by Christofer Kronschnabl and Wolfgang Ernst of Panasonic discuss use of capacitors and inductors to suppress these effects.
The different Optical Amplifier Technologies have been reviewed with respect to their capability to meet the requirements of on-board space applications and to their suitability for use in space.
Just as thermistors the varistor is fabricated from a compressed and sintered powder compound that consists of silicon carbide (SiC) or zinc oxide (ZnO). The ZnO varistor has superior characteristics and predominates today all manufacture. This section deals with ZnO varistors only.
These electrolytic capacitors have high instability and poor tolerances, and their performance deteriorates when they are subjected to high leakage current or high temperatures. Plastic film and paper capacitors are usually used in circuits that demand capacitors with good aging performance, high stability, and high current-carrying capability. For high-frequency applications, ceramic capacitors are a good option. However, these capacitors have poor aging performance.
The GRACE project is framed within the main challenges of our society, particularly safe, efficient, and clean energy, while connecting with aspects of security, safety, and defense, as well as climate change and efficiency in the use of resources raw materials.