Oscillators are designed with amplitude, frequency and phase

However, the signals of the circuits described here are

since they implement

Their 3 outputs can be seen as the coordinates of a point in a phase space,

and a 2D view of the trajectory can be displayed on a XY oscilloscope.

Frequency response of these signals are also of interest.

Of course any software would display these attractors in full 3D and nice colors,

with no hardware at all

The top menu links to pages showing

of the electronic circuits, plots of all the output's time series,

Fourier Transform, and parametric phase space

In practice we use equations to solve physics problems :

here we will use analogic circuits to solve dynamic equations,

which is easily done by the use of common off-the-shelve AOPs.

The retrieval of

Roughly, feeding

Addition, substraction, multiplication by a constant and

weighted sums are performed using one or more summing AOP.

Negative resistor by the means of a Negative Impedance Converter.

The product of two voltages can be implemented using

however for a simpler design we will use an analogic multiplier like the AD633.

Now we have everything in hand to build our

check the top-page menu for