Aktivna diferencialna sonda 500V / 2MHz

RODE, PETER (author), Buermen, Arpad (mentor)

Cilj diplomskega dela je bil izdelati aktivno diferencialno sondo z baterijskim napajanjem za merjenje sofazne in diferencialne napetosti do 500V in s frekvenčno mejo najmanj 1MHz. Sonda se bo uporabljala v podjetju Elektrotehnika Spekter za načrtovanje stikalnih napajalnikov. Na podlagi zahtevanih specifikacij smo razvili osnovno vezje diferencialne sonde, vezje za napajanje in vezje za prikaz polnosti baterije. Dodali smo varnostne elemente, ki ščitijo uporabnika in napravo pred visokonapetostnim udarom. Izdelali smo prototipa diferencialne sonde, s katerim smo preizkusili delovanje načrtanega vezja. Po pregledu delovanja prototipa smo dodali nekaj izboljšav in izdelali končno verzijo sonde. Vezje smo vgradili v primerno ohišje. Končano sondo smo umerili in izmerili njene karakteristike.

• Language: Slovenian
• Keywords: aktivna diferencialna sonda, baterijsko napajanje. frekvenčna meja, prototip, umerjanje
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2015
• PID: 20.500.12556/RUL-72349
• Publication date in RUL: 14.09.2015

Secondary language

• Language: English
• Title: Active differential oscilloscope probe 500V / 2MHz

Abstract

The goal of this thesis is the construction of a battery powered active differential probe for measurement of common-mode and differential voltage up to 500V With a frequency response of at least 1MHz. The probe will be used for development of switching power supplies in the Elektrotehnika Spekter. We developed the basic circuit of the differential probe, a power supply circuit and a battery state indicator circuit. Safety elements were also added to the basic circuit. These elements protect the user and the surrounding equipment from a high voltage discharge. First we made a prototype differential probe that was used as a proof of concept and confirmation that the circuit is working as expected. After experimentation on the prototype we added some additional improvements. This led us to the final schematic from witch we constructed the final version of the printed circuit board. The circuit was built into a suitable case. Finally, we calibrated the device and measured its characteristics.

• Keywords: active differential probe, battery powered. frequency response, prototype, calibration