Circuits which realize chaotic oscillators of arbitrary degree, using a pie
cewise-linear element, are now well known. In such circuits, the linear por
tion requires, in general, resistors, inductors, and capacitors which may b
e positive or negative, while the piecewise-linear element has at least one
negative slope. It is shown here that any oscillator based on an odd symme
trical continuous piecewise-linear element with three linear regions, and n
prescribed eigenvalues in each region, can be realized by a linear circuit
with positive inductance and capacitance and one linear negative resistanc
e. It is also shown that the slopes of the piecewise-linear element may be
made positive or zero. A canonic realization is given, and the technique is
applied to a number of published examples.