Multilevel inverters have been widely used in various applications, as they provide output voltage with better quality, lower dv/dt, and Total Harmonic Distortion (THD). inverter such Neutral Point Clamped (NPC) uses a large number of semiconductor devices (IGBTs diodes) which negatively affects the cost efficiency. Recently, three-level (3L) F-type has proposed switch stresses, cost, losses co...

A series of pentacyanoferrate complexes, N a3[F e (C N )5L ] /jH20 , where L = (C H 3) 2N H , (C 2H 5) 2N H , (C 2H 5)3N , (C 3H 7)2N H , (C 4H 9)2N H , (C 4H 9)3N and (C 6H 5)2N H were studied by Mössbauer and infrared spectroscopy. A ll the complexes exhibited two line spectra with A E Q = 0.73—1.92 mms“1 and <5 = —0.04—0.49 m m s '1 (w.r.t. SNP) and can be divided into two groups with well d...

A facile synthesis of hitherto unreported 3-(2-benzofuroyl)carbazoles 3a-k, 3,6-bis(2-benzofuroyl)carbazoles 5a-k, and naphtho[2,1-b]furoylcarbazoles 3l and 5l is described. The synthesis mainly relies on the ultrasound-assisted Rap-Stoermer reaction of 3-chloroacetyl- (1) or 3,6-dichloroacetyl-9-ethyl-9H-carbazole (4) with various salicylaldehydes 2a-k as well as 2-hydroxy-1-naphthaldehyde (2l...