[Others] What is negative resistance exactly means?

What is negative resistance, how is it related to oscillators?In my understanding, it's something to do with decreasing current vs increasing voltage. Is it a necessary condition for oscillation?

[Others] Queations about RC oscillators and LC oscillators.

Why RC oscillators are used for generating below 1MHz frequencies, and LC oscillators for above 1MHz freqs? Why cant we use RC for high freqs, and LC for low-medium freqs?
  • answered Oct 27,2020
    by Andrew
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