LTSpice software power settings

DC voltage source setting

DC voltage source setting ( Including internal resistance )

SINE Voltage source setting

Time varying exponential voltage source

As shown in the figure , The time-varying exponential voltage is derived from the peak voltage 、 Rising edge delay 、 Rising edge time 、 Falling edge delay, falling edge time and other parameters . Rising edge time refers to the voltage from the peak voltage 10% Rise to 90% The time it takes , The falling edge time refers to the voltage falling from the peak voltage to 50% The time it takes .

Software parameter interpretation

In practice, ,LTspice Through the initial voltage (Vinitial)、 Pulse voltage (Vpulsed)、 Rising edge delay (Rise Delay)、 Rise time (Rise TAU)、 Descent delay (Tfall Delay) And descent time (Fall TAU).

## example 1

Reference material

• https://www.analog.com/en/technical-articles/ltspice-using-time-dependent-exponential-sources-to-model-transients.html Time varying exponential voltage source EXP