Hi, Shawn! Thank you for your reply. Although I implemented what I said in my last comment, I mistakenly provided the wrong screenshot of the schematic in figure 03 the last time. Sorry for that. I have uploaded the correct figure 03 now (in the storage link as well). There, you will see that other than the vcr, everything else is same as figure 02. Now, as you can see in figure 03, it's excitation is the same as that of figure 02. So, the transient analysis will make sense. And you are right that the circuit needs excitation to build up the oscillation. That excitation in both the circuits in figure 02 and figure 03 in form of a very short current pulse is indirectly mimicking the noise source. Now, as due to that excitation the circuit in figure 02 builds up oscillation, if the vcr implementation is right in replacing the 1 ohm resistance, shouldn't the circuit in figure 03 also oscillate?
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