Apparatus for measuring the current-voltage characteristics of a TRAPATT diode

摘要

An apparatus for measuring the current-voltage characteristics of a TRAPATT diode to determine its operational performance prior to mounting in its intended circuit. The apparatus comprises a pulse generator for generating a pulsed signal which is modulated by a modulator such that the current of the pulsed signal as applied to the diode periodically increases and decreases. The modulating signal is generated by a full wave bridge rectifier. The modulated signal sweeps the current applied to the diode through the characteristic curve of the diode triggering the diode into the TRAPATT mode of operation. An indicator such as an oscilloscope coupled to the diode displays the characteristic curve including the negative resistance region of the diode occurring during TRAPATT operation.