○ How quickly should the impulse reach peak voltage and how fast should the waveform fall? ○ Which type of signal will be the input for the circuit: voltage or current? To create the required impulse source for simulation, there are three items that must be defined: What is needed to Model an Impulse Source? Many designs are often required to be qualified against the effect of these types of impulses, especially power supply systems. In a few microseconds, a lightning impulse voltage rises to its peak value then falls to zero relatively slowly. To efficiently and accurately model an impulse source, the intended input signal must be interpreted by identifying the type and signal values for replication.Īn impulse source simulates a lightning strike to test the effect of an external source of high voltages such as lightning strike on your designs. If not modeled accurately, functionality issues can go undetected until far later in the design process, wasting time and money.
To analyze how the circuit will behave in real life, this input must be modeled accurately. Modeling programs simulate circuit behavior under different conditions and in accordance with the design requirements, allowing engineers to better plan and build circuits.Įvery SPICE simulation needs to have a source or input signal. Modeling designs helps engineers verify whether their circuit will function as intended.
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