Envelope shaping Sinewave Cycles

012_Sine_Burst : Envelope shaping Sinewave Cycles

Requires: SmartSpice & Smartview

Minimum Versions: SmartSpice 4.6.5.R

Two sources can be used to give a variety of shaped Sine Wave cycles ranging from a ramp up to a constant level and a burst of Sinewave cycles for example. In the example xxx the sinewave can be made to ramp up in amplitude then remain at a constant level.

The input deck is a SPICE file containing the setup of the bias circuit for the sense inputs of the E(VCVS) element, and the look-up table to vary the corresponding output voltage levels.

To run the simulation, Source the input deck and press the green run button. When the simulation completes, the tabular results are shown in SmartSpice GUI window.

Plotting the output waveforms in a smartview window you can see the ramped voltage (vdd), input of the E element v(vcvs) and the corresponding output voltage v(tso) due to the look-up table values.

You can plot v(tso) vs v(vcvs) waveform to directly check the look-up table by setting v(vcvs) as the scale parameter (a Smartview feature).