AUTOMATIC DEVICE FOR MEASUREMENT OF DIFFERENTIAL PARAMETERS OF NONLINEAR ELEMENTS

摘要

The invention relates to the art of radio, intended for automatically measuring the conductivity of the active component, capacitance and Q of different nonlinear and linear elements in parallel and / or sequential schemes of substitution parameters with high accuracy and speed of measurement over a wide range of operating frequencies. SUMMARY OF THE INVENTION: an automatic device for measuring differential parameter nonlinear elements comprises an analog-digital converter coordinates the transition through zero of the second derivative, a measuring unit with a test non-linear element multichannel switch, micro roEVM unit displaying information and kodoupravl emy source bias voltage. As a result of the operation of dual form accurate digital information on the coordinates of a zero crossing of the second derivative of the amplitude-frequency characteristic measuring unit respectively with disconnected and connected investigated nonlinear element, and then calculating the unknown parameters using the microcomputer are increased accuracy and speed measurements without contraction range of operating frequencies. 3 yl. / E