Dyson says that the HEPA filter in the Big+Quiet will not require replacing for about five years – five times longer than the ones used in its other air purifiers – which could make it a ...

An active pHEMT based frequency doubler is designed using 0. 13umGaAs MMIC process with integrated On-Chip ESD protection circuitry. All GaAs integrated circuits are sensitive to ESD damage. Failures ...