Contents
What is operating point simulation?
Operating point analysis is one of many SPICE simulation methods available in Autodesk EAGLE 8.4. If you ever need to analyze the voltage and current of a circuit at a specific point in time, then this is your simulation of choice.
What is DC analysis in LTspice?
op) method in LTspice. The DC operating point analysis calculates the DC voltage and current of each node in the steady state of the electronic circuit.
What is DC analysis and AC analysis?
AC analysis gives u the output and other values when an A.C supply is provided to the designed circuit. DC analysis gives u the output and other values when an D.C supply is provided to the circuit. Transient analysis is most useful for studying fault conditions in the circuit, like short circuits, overloads, etc.
How are DC operating points calculated?
Vcc = Vce + IcRc In this equation, Vcc is the supply voltage, Vce is the collector-emitter voltage, and IcRc is the voltage drop across the base resistor (Rb).
What is the result of a DC operating point analysis?
DC Operating Point Analysis calculates the behavior of a circuit when a DC voltage or current is applied to it. The result of this analysis is generally referred as the bias point or quiescent point, Q-point. In most cases, the results of the DC Operating Point Analysis are intermediate values for further analysis.
How does the op function work with DC sweeps?
The OP function will retrieve the DC operating point data, not the results from the DC sweep. If you do that, and send the signal from the results browser to the calculator, you’ll get something like this: And this should plot the gm versus the swept variable for the dc analysis.
What is the purpose of DC Sweep analysis?
DC Sweep Analysis is used to calculate a circuits’ bias point over a range of values. This procedure allows you to simulate a circuit many times, sweeping the DC values within a predetermined range.
How to plot GM versus time using DC sweeps?
Having done this, you should be able to access the resulting operating point data from the DC sweep from the results browser, and then you’ll get a plot of it versus your sweep. Similarly if you did a transient you could plot the gm versus time using this approach. Andrew. thanks for your reply.