Can someone explain in a few sentences what the title means ? Also provide Example of a steady state ac voltage and current waveforms and circuit.
Sounds like a homework question. So why don't you take your best shot at providing an answer and we'll help you correct it or flesh it out.Can someone explain in a few sentences what the title means ? Also provide Example of a steady state ac voltage and current waveforms and circuit.
Yes and no. When first introduced to most students it is within the context of first- and second-order DC circuits having a transient response and a steady state response and the distinction is often phrased along the lines that steady state is when none of the voltages or currents are changing. This is frequency emphasized mathematically by saying that in steady state the time derivatives of all signals are zero.The term is pretty well self explanatory.
For AC steady state it means that the response has settled into a stable set of sinewaves. Whether voltage lags current or vice versa is irrelevant. In general when the input to the system changes you will have a response that is transient and goes away and a response that, barring any further changes in the input, stays the same. By "stays the same" (for both input and output) we mean a periodic signal that repeats itself over and over and over -- generally a sine wave, but not necessarily.Hi, thanks for your replies. I only asked this because I am have a Power Electronics module and in the first lecture's slides there is a waveform of current and voltage in phase. And the title of the graph was "Steady State AC Voltage & Current Waveforms for a purely resistive load". I know when current lags voltage or when current leads voltage. My only question was: what does steady state means? I have done transient state analysis for capacitor. Don't know what this means. That's all.
I think this is going too far. The designer might well design for the transient response, such as an echo effect, and in doing so they do not turn the echo into some kind of steady state response.Let me present a slightly different engineering perspective.
One way to approach response of a circuit is to divide it into Transient Response and Steady State Response.
A good example of transient response is the sound that an audio speaker makes when you turn it on. It might be some hum that quickly goes away or just a sudden short burst of sound. This sound represents the circuit response to sudden presence of electricity because you closed the switch and connected the circuit to the source of electricity. However, the transient response is... transient. We do not design products for their transient response. We design products for their steady state response.
Steady state response is the normal operation of a product and since product is some kind of circuit, it is normal operation of the circuit, it is what the designer wants the circuit to do which means it is predictable and reproducible.
Is it predictable?I think this is going too far. The designer might well design for the transient response, such as an echo effect, and in doing so they do not turn the echo into some kind of steady state response.
It doesn't matter whether it is or not, it is part of the transient response of the circuit, not the steady state response.Is it predictable?
Is it reproducible?
Hi,Hi, thanks for your replies. I only asked this because I am have a Power Electronics module and in the first lecture's slides there is a waveform of current and voltage in phase. And the title of the graph was "Steady State AC Voltage & Current Waveforms for a purely resistive load". I know when current lags voltage or when current leads voltage. My only question was: what does steady state means? I have done transient state analysis for capacitor. Don't know what this means. That's all.
Hi,
Thanks!
Hello there,
Thanks!MrAl said:Hi,
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