Timeline for Complex Voltage and Current in Steady State DC Circuit with Nonlinear Component
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 21, 2019 at 1:17 | comment | added | Tony Stewart EE since 1975 | It works but the steady state is to the right of his curve But the Thevenin appears not to work.. The Norton equivalent with 5A//1.6 Ohms works | |
| Nov 21, 2019 at 0:20 | comment | added | Vinicius ACP | @G36 So, in a "real number world", this circuit simply does not work? I mean, if I have the second circuit situation, will the entire circuit be "off" or something like that? | |
| Nov 20, 2019 at 22:59 | comment | added | Vinicius ACP | @TonyStewartSunnyskyguyEE75 Ok. $$ v=3.744 \mathrm V \implies i \approx 2.66 \mathrm A \\ \begin{alignat}{1} \\ v &= 8-v_R \\ v &= 8-1.6 \cdot i \\ v &= 8-1.6 \cdot 2.66\\ 3.744 &= 3.744 \end{alignat} $$ Without using the Thévenin's equivalent: $$ \begin{alignat}{1} v_R &= v-3.2\\ 1.6 \cdot i_R &= 3.744-3.2 \\ 1.6 \cdot (3-2.66) &= 0.544 \\ 1.6 \cdot 0.34 &= 0.544 \\ 0.544 &= 0.544 \\ \end{alignat} \\3.2+0.544=3.744=v $$ I can't apply these values in \$ v=3.2-v_R \$ because they are not solutions of $$ 4.8v^2-27.8v+41.6=0 $$ So, where is the mistake? | |
| Nov 20, 2019 at 22:04 | comment | added | Tony Stewart EE since 1975 | plug in my answer and you will see that your KCL statement is not right | |
| Nov 20, 2019 at 22:02 | comment | added | Vinicius ACP | @TonyStewartSunnyskyguyEE75 What mistake? I simply applied it: $$ -3.2+v_R+v = 0 \implies v = 3.2 - v_R $$ | |
| Nov 20, 2019 at 21:57 | comment | added | Tony Stewart EE since 1975 | try v=3.744 then i {=2.66} + 0.34 = 3A | |
| Nov 20, 2019 at 21:49 | history | edited | G36 | CC BY-SA 4.0 | edited body |
| Nov 20, 2019 at 21:42 | comment | added | Tony Stewart EE since 1975 | The complex numbers mean you made a mistake early in KVL and this answer is wrong/incomplete for v > 3V | |
| Nov 20, 2019 at 21:40 | comment | added | Vinicius ACP | But what is the interpretation of the complex voltages and currents I got? Do they have any physical meaning? | |
| Nov 20, 2019 at 21:24 | history | answered | G36 | CC BY-SA 4.0 |