The tunnel diode monostable circuit with non-linear biasing plays an important role in millimicrosecond pulse techniques. In this paper

monostable circuits described by the second

third and fourth order nonlinear differential equations are analyzed by using a graphical method proposed by one of the authors[3]. Switching properties under various operating conditions and with various external circuit parameters are studied. A method is proposed to present solution curves with specified time intervals in the phase-plane of a typical device and from these curves switching properties of the monostable operations can be calculated. By proper mathematical transformations

these curves also provide useful informations for practical circuit design in general.The switching properties of monostable circuits are measured. The experimental results are in good agreement with the calculated values.