An Unstable Nonlinear Circuit

An instability curve of series impedance versus voltage common to the parallel branch of the circuit as in figure 1 can be calculated approximately. If this curve contains maximum and minimum points the circuit will have two states of stability with an intermediate unstable range. Some practical use of this phenomenon has been suggested for circuit control and energy conversion. The circuit which produces reciprocating motion has not been completely analyzed, hence the optimum operating conditions cannot be stated until further knowledge is obtained.