Contribuții în domeniul sistemelor integrate de testare a componentelor și dispozitivelor electronice / Contributions in the field of integrated testing systems of electronic components and devices

The main objective of this thesis it is represented by developing a prototype that can perform a I(V) characteristic of a device using pulsed measurements, this way allows to go over maximum recommended power without damaging the electronic component. The novelty in this domain is the implementation of such technique and building up of a testing system starting with the USB interface to a personal computer that could display in real time the measurements and store them for future extraction of SPICE model coefficients extraction. In this way a more accurate SPICE model can be issued for the device under test and simulations results will become more accurate leading to a better digital environment replica of the real electronic circuit. During the 4 chapters there are presented first steps and enhancements of prototype’s construction starting with concept schematics simulation and finally testing these in the laboratory. The first chapter contains the introduction into integrated testing systems while the second presents in details an original solution implemented up to prototype level regarding the impulse measurement curve tracer development for electronic tubes. The 3rd chapter is about a new solution of suppling the vacuum tubes heaters. Low voltage power supply has been improved by increasing its power, its speed of reaction and its energy efficiency. Chapter 4 presents in the first part actual SPICE models for electronic tubes. In the second part there are presented the results of coefficients extraction corresponding to a SPICE model of an electronic tube characterized with the prototype from 2nd chapter.