\begin{tikzpicture}[scale=2.54]% % dpic version 2022.12.01 option -g for TikZ and PGF 1.01 \ifx\dpiclw\undefined\newdimen\dpiclw\fi \global\def\dpicdraw{\draw[line width=\dpiclw]} \global\def\dpicstop{;} \dpiclw=0.8bp \dpiclw=0.8bp \dpicdraw (0,0) --(0,0.25)\dpicstop \dpicdraw (0,0.375) circle (0.049213in)\dpicstop \dpicdraw (0,0.5) --(0,0.75)\dpicstop \draw (0,0.25) node[below left=-2bp]{$ -$}; \draw (-0.125,0.375) node[left=-2bp]{$ v_s$}; \draw (0,0.5) node[above left=-2bp]{$ +$}; \dpicdraw (0,0.75) --(0.25,0.75) --(0.270833,0.791667) --(0.3125,0.708333) --(0.354167,0.791667) --(0.395833,0.708333) --(0.4375,0.791667) --(0.479167,0.708333) --(0.5,0.75) --(0.75,0.75)\dpicstop \draw (0.375,0.708333) node[below=-2bp]{$ R$}; \dpicdraw[fill=black](0.75,0.75) circle (0.007874in)\dpicstop \dpicdraw (0.75,0.75) --(0.75,0.4)\dpicstop \dpicdraw (0.666667,0.4) --(0.833333,0.4)\dpicstop \dpicdraw (0.666667,0.35) --(0.833333,0.35)\dpicstop \dpicdraw (0.75,0.35) --(0.75,0)\dpicstop \draw (0.75,0.4) node[above left=-2bp]{$ +$}; \draw (0.666667,0.375) node[left=-2bp]{$ v$}; \draw (0.75,0.35) node[below left=-2bp]{$ -$}; \draw (0.833333,0.375) node[right=-2bp]{$ C$}; \dpicdraw[fill=black](0.75,0) circle (0.007874in)\dpicstop \dpicdraw (0.75,0.75) --(1.25,0.75)\dpicstop \dpicdraw (1.25,0.75) --(1.25,0.5)\dpicstop \dpicdraw (1.25,0.5) --(1.244444,0.5)\dpicstop \dpicdraw (1.25,0.5) ..controls (1.261165,0.5) and (1.271481,0.494044) ..(1.277063,0.484375) ..controls (1.282646,0.474706) and (1.282646,0.462794) ..(1.277063,0.453125) ..controls (1.271481,0.443456) and (1.261165,0.4375) ..(1.25,0.4375)\dpicstop \dpicdraw (1.25,0.4375) --(1.244444,0.4375)\dpicstop \dpicdraw (1.25,0.4375) ..controls (1.261165,0.4375) and (1.271481,0.431544) ..(1.277063,0.421875) ..controls (1.282646,0.412206) and (1.282646,0.400294) ..(1.277063,0.390625) ..controls (1.271481,0.380956) and (1.261165,0.375) ..(1.25,0.375)\dpicstop \dpicdraw (1.25,0.375) --(1.244444,0.375)\dpicstop \dpicdraw (1.25,0.375) ..controls (1.261165,0.375) and (1.271481,0.369044) ..(1.277063,0.359375) ..controls (1.282646,0.349706) and (1.282646,0.337794) ..(1.277063,0.328125) ..controls (1.271481,0.318456) and (1.261165,0.3125) ..(1.25,0.3125)\dpicstop \dpicdraw (1.25,0.3125) --(1.244444,0.3125)\dpicstop \dpicdraw (1.25,0.3125) ..controls (1.261165,0.3125) and (1.271481,0.306544) ..(1.277063,0.296875) ..controls (1.282646,0.287206) and (1.282646,0.275294) ..(1.277063,0.265625) ..controls (1.271481,0.255956) and (1.261165,0.25) ..(1.25,0.25)\dpicstop \dpicdraw (1.25,0.25) --(1.244444,0.25)\dpicstop \dpicdraw (1.25,0.25) --(1.25,0)\dpicstop \draw (1.244444,0.375) node[left=-2bp]{$ L$}; \filldraw[line width=0bp](1.225,0.65) --(1.25,0.55) --(1.275,0.65) --cycle\dpicstop \dpicdraw (1.25,0.572906) --(1.25,0.65)\dpicstop \draw (1.25,0.611453) node[right=-2bp]{$ i$}; \dpicdraw (1.25,0) --(0,0)\dpicstop \end{tikzpicture}% \begin{tikzpicture}[scale=2.54]% % dpic version 2022.12.01 option -g for TikZ and PGF 1.01 \ifx\dpiclw\undefined\newdimen\dpiclw\fi \global\def\dpicdraw{\draw[line width=\dpiclw]} \global\def\dpicstop{;} \dpiclw=0.8bp \dpiclw=0.8bp \dpicdraw (0,0) --(0,0.25)\dpicstop \dpicdraw (0,0.375) circle (0.049213in)\dpicstop \dpicdraw (0,0.5) --(0,0.75)\dpicstop \draw (0,0.25) node[below left=-2bp]{$ -$}; \draw (-0.125,0.375) node[left=-2bp]{$ v_s$}; \draw (0,0.5) node[above left=-2bp]{$ +$}; \dpicdraw (0,0.75) --(0.25,0.75) --(0.270833,0.791667) --(0.3125,0.708333) --(0.354167,0.791667) --(0.395833,0.708333) --(0.4375,0.791667) --(0.479167,0.708333) --(0.5,0.75) --(0.75,0.75)\dpicstop \draw (0.375,0.708333) node[below=-2bp]{$ R$}; \dpicdraw[fill=black](0.75,0.75) circle (0.007874in)\dpicstop \dpicdraw (0.75,0.75) --(0.75,0.4)\dpicstop \dpicdraw (0.666667,0.4) --(0.833333,0.4)\dpicstop \dpicdraw (0.666667,0.35) --(0.833333,0.35)\dpicstop \dpicdraw (0.75,0.35) --(0.75,0)\dpicstop \draw (0.75,0.4) node[above left=-2bp]{$ +$}; \draw (0.666667,0.375) node[left=-2bp]{$ v$}; \draw (0.75,0.35) node[below left=-2bp]{$ -$}; \draw (0.833333,0.375) node[right=-2bp]{$ C$}; \dpicdraw[fill=black](0.75,0) circle (0.007874in)\dpicstop \dpicdraw (0.75,0.75) --(1.25,0.75)\dpicstop \dpicdraw (1.25,0.75) --(1.25,0.5)\dpicstop \dpicdraw (1.25,0.5) --(1.244444,0.5)\dpicstop \dpicdraw (1.25,0.5) ..controls (1.261165,0.5) and (1.271481,0.494044) ..(1.277063,0.484375) ..controls (1.282646,0.474706) and (1.282646,0.462794) ..(1.277063,0.453125) ..controls (1.271481,0.443456) and (1.261165,0.4375) ..(1.25,0.4375)\dpicstop \dpicdraw (1.25,0.4375) --(1.244444,0.4375)\dpicstop \dpicdraw (1.25,0.4375) ..controls (1.261165,0.4375) and (1.271481,0.431544) ..(1.277063,0.421875) ..controls (1.282646,0.412206) and (1.282646,0.400294) ..(1.277063,0.390625) ..controls (1.271481,0.380956) and (1.261165,0.375) ..(1.25,0.375)\dpicstop \dpicdraw (1.25,0.375) --(1.244444,0.375)\dpicstop \dpicdraw (1.25,0.375) ..controls (1.261165,0.375) and (1.271481,0.369044) ..(1.277063,0.359375) ..controls (1.282646,0.349706) and (1.282646,0.337794) ..(1.277063,0.328125) ..controls (1.271481,0.318456) and (1.261165,0.3125) ..(1.25,0.3125)\dpicstop \dpicdraw (1.25,0.3125) --(1.244444,0.3125)\dpicstop \dpicdraw (1.25,0.3125) ..controls (1.261165,0.3125) and (1.271481,0.306544) ..(1.277063,0.296875) ..controls (1.282646,0.287206) and (1.282646,0.275294) ..(1.277063,0.265625) ..controls (1.271481,0.255956) and (1.261165,0.25) ..(1.25,0.25)\dpicstop \dpicdraw (1.25,0.25) --(1.244444,0.25)\dpicstop \dpicdraw (1.25,0.25) --(1.25,0)\dpicstop \draw (1.244444,0.375) node[left=-2bp]{$ L$}; \filldraw[line width=0bp](1.225,0.65) --(1.25,0.55) --(1.275,0.65) --cycle\dpicstop \dpicdraw (1.25,0.572906) --(1.25,0.65)\dpicstop \draw (1.25,0.611453) node[right=-2bp]{$ i$}; \dpicdraw (1.25,0) --(0,0)\dpicstop \end{tikzpicture}%