# 3 ways of transient processes, in LRC circuits

• Bassalisk
In summary, the speaker shared their experience at signals and mentioned passing the exam with a low score. They then shifted the topic to RLC circuits and expressed their fascination with the transient process when using an oscilloscope. They asked for parameters or a guide to observe all three transient processes in the same circuit with different values for RLC. The damping factor of the circuit was mentioned as the determining factor for the step response, and the speaker planned to use available component values to solve for the critical damped, underdamped, and overdamped cases. They also mentioned wanting to use nice values in relation to frequency for easier observation.

#### Bassalisk

Hello!

For those that were with me at signals, I passed the exam, but barley. 10,5 points out 20. Going to cancel that exam and do it again when I have the chance.

But anyway, back to the topic.

I am trying to get the intuition for transient processes in RLC circuits. I was taught that 3 exist, each of them represented by different solutions from differential equation.

When I connected an oscilloscope in National instruments, to a RLC circuit, when I turned on the circuit, I saw the transient process. It was like magic to me.

Can anybody give me good parameters, or a guide so I can see all 3 transient processes in the same circuit but with various values for RLC?

Thanks

Bassalisk said:
When I connected an oscilloscope in National instruments, to a RLC circuit, when I turned on the circuit, I saw the transient process. It was like magic to me.

Can anybody give me good parameters, or a guide so I can see all 3 transient processes in the same circuit but with various values for RLC?
The circuit's damping factor

will determine the RLC circuit's step response. I don't know what component values you have lying around, but use what you've got to and solve for the critical damped case (ζ = 1), underdamped case (ζ < 1) and overdamped case (ζ > 1)?

gnurf said:
The circuit's damping factor

will determine the RLC circuit's step response. I don't know what component values you have lying around, but use what you've got to and solve for the critical damped case (ζ = 1), underdamped case (ζ < 1) and overdamped case (ζ > 1)?

I wanted nice values in relation to frequency, because, oscillations and transients are not very easy to spot at 50kHz.

Guess I will figure them out of that formula, thanks.