Required information Consider the oscillator circuit given...

Required information Consider the oscillator circuit given below, where L = 0.2 mH and R = 60 k?. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Calculate the minimum value of R for which oscillation takes place. The value of R is k?.

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Transcript

00:01 Hey guys, in this problem, we're given a circuit that it's an oscillator circuit with a bunch of values for your resistors, capacitors, and we need to find the minimum value of r where oscillation will take place.

00:13 So basically for oscillation, it's going between, i missed a line here, let me draw that in, there we go, this right here, and this is going to run here and only run through these.

00:31 Basically, the voltages need to be the same for both.

00:35 So first we need to find the voltage that is going to run.

00:40 And first we can run through this one, the top one, the blue one.

00:44 So we're just, it's just one plus r1 over rn.

00:49 I've labeled these to make it a little bit easier instead of just a bunch of ours.

00:51 That would get really confusing.

00:53 The one pulls out just because of we don't have a frequency at the moment.

00:59 So you're just going to do r1.

01:01 Which is given as 60.

01:04 We're going to write that one plus here actually.

01:06 60 kilo -ooms over your input, which is 20 kilo -ooms.

01:15 And this equals four.

01:18 Okay.

01:19 So now at oscillation, we know they need to be equal.

01:22 So these can all cancel...

Question

Required information Consider the oscillator circuit given below, where L = 0.2 mH and R = 60 k?. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Calculate the minimum value of R for which oscillation takes place. The value of R is k?.

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