Bộ phận điện tạo ra dao động sóng điện
V L + V C = 0 {\displaystyle V_{L}+V_{C}=0} d 2 d t 2 i + 1 T i = 0 {\displaystyle {\frac {d^{2}}{dt^{2}}}i+{\frac {1}{T}}i=0} d 2 d t 2 i = − 1 T i {\displaystyle {\frac {d^{2}}{dt^{2}}}i=-{\frac {1}{T}}i} i = A S i n ω t {\displaystyle i=ASin\omega t} ω = 1 T {\displaystyle \omega ={\sqrt {\frac {1}{T}}}} T = L C {\displaystyle T=LC}
Z L + Z C = 0 {\displaystyle Z_{L}+Z_{C}=0} . V L + V C = 0 {\displaystyle V_{L}+V_{C}=0} v ( θ ) = A sin ( ω o + 2 π ) + A sin ( ω o − 2 π ) {\displaystyle v(\theta )=A\sin(\omega _{o}+2\pi )+A\sin(\omega _{o}-2\pi )} ω o = ± j 1 T {\displaystyle \omega _{o}=\pm j{\sqrt {\frac {1}{T}}}} T = L C {\displaystyle T=LC}
V L + V C + V R = 0 {\displaystyle V_{L}+V_{C}+V_{R}=0} d 2 i d t 2 + R L d i d t + 1 T i = 0 {\displaystyle {\frac {d^{2}i}{dt^{2}}}+{\frac {R}{L}}{\frac {di}{dt}}+{\frac {1}{T}}i=0} d 2 d t 2 i = − 2 α d i d t − β i {\displaystyle {\frac {d^{2}}{dt^{2}}}i=-2\alpha {\frac {di}{dt}}-\beta i} i = A ( α ) S i n ω t {\displaystyle i=A(\alpha )Sin\omega t} A ( α ) = A e − α t {\displaystyle A(\alpha )=Ae^{-\alpha t}} ω = β − α {\displaystyle \omega ={\sqrt {\beta -\alpha }}} β = 1 T = 1 L C {\displaystyle \beta ={\frac {1}{T}}={\frac {1}{LC}}} γ = β γ = R 2 L {\displaystyle \gamma =\beta \gamma ={\frac {R}{2L}}} T = L C {\displaystyle T=LC} γ = R C {\displaystyle \gamma =RC}
Z L + Z C = 0 {\displaystyle Z_{L}+Z_{C}=0} . Z t = Z C + Z C + Z R = R {\displaystyle Z_{t}=Z_{C}+Z_{C}+Z_{R}=R} i ( ω = 0 ) = 0 {\displaystyle i(\omega =0)=0} i ( ω = ω o ) = v R {\displaystyle i(\omega =\omega _{o})={\frac {v}{R}}} i ( ω = 00 ) = 0 {\displaystyle i(\omega =00)=0} ω o = ± j 1 T {\displaystyle \omega _{o}=\pm j{\sqrt {\frac {1}{T}}}} T = L C {\displaystyle T=LC}
