The 12mm F1.4 DC Contemporary shares the same design language and approach as others in the series. It's a small lens (2.7 by 2.7 inches, 7.9 to 8.8 ounces depending on mount) and impressively covers ...

Abstract: In order to address the problem of limited samples in the fault diagnosis of DC-DC (Direct Current to Direct Current, DC-DC) power modules, this paper proposes a method combining wavelet ...