In this paper, a new transformerless buck-boost converter based on ZETA converter is introduced. The proposed converter has the ZETA converter advantages such as, buck-boost capability and input to output DC insulation. The suggested converter voltage gain is higher than the classic ZETA converter. In the presented converter, only one main switch is utilized. The proposed converter offers low v...

a $p$-group $g$ is called a $mathcal{cac}$-$p$-group if $c_g(h)/h$ is ‎cyclic for every non-cyclic abelian subgroup $h$ in $g$ with $hnleq‎ ‎z(g)$‎. ‎in this paper‎, ‎we give a complete classification of‎ ‎finite $mathcal{cac}$-$p$-groups‎.

Let $Z$ be a non-compact two-dimensional manifold obtained from family of open strips $\mathbb{R}\times(0,1)$ with boundary intervals by gluing those along some pairs their intervals. Every such strip has natural foliation into parallel lines $\mathbb{R}\times t$, $t\in(0,1)$, and which gives $\Delta$ on all $Z$. Denote $\mathcal{H}(Z,\Delta)$ the group homeomorphisms that maps leaves onto $\ma...

A $p$-group $G$ is called a $mathcal{CAC}$-$p$-group if $C_G(H)/H$ is ‎cyclic for every non-cyclic abelian subgroup $H$ in $G$ with $Hnleq‎ ‎Z(G)$‎. ‎In this paper‎, ‎we give a complete classification of‎ ‎finite $mathcal{CAC}$-$p$-groups‎.

1 SCHMID, H.: 'Electronic analog/digital conversions' (Van Nostrand Reinhold, 1970), p. 296 2 EDSON, j . o., and HEMMING, H. H.: 'Broadband codecs for an experimental 224M6/5 PCM Terminal', Bell Syst. Tech. J., 1965, pp. 1887-1940 3 RAKOVICH, D., and DJORDJEVICH, B. Z.: 'A wide-range voltage-to-time converter', IEEE Trans., 1973, IM-22, pp. 162-165 4 HART, B. L., and BARKER, R. W. J.: 'A precis...

─The suitability of a single-stage ac-dc buck-boost converter for low-voltage applications is investigated. Indepth discussion and analysis of the converter’s operating principle, basic relationships that govern converter steadystate operation, and details of the necessary control structures needed to comply with the grid code are provided. The validity of the proposed system is confirmed using...

Let g be a fixed element of a finite group G. We introduce the g-noncommuting graph of G whose vertex set is whole elements of the group G and two vertices x,y are adjacent whenever [x,y] g  and  [y,x] g. We denote this graph by . In this paper, we present some graph theoretical properties of g-noncommuting graph. Specially, we investigate about its planarity and regularity, its clique number a...