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作者:Michał Kalisiak , Aleksander Burd
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2016SPIE
摘要:This paper presents a new method of measurement of quality factor of inductors and resonance circuits with usage of the effect of the formation of oscillations in sine wave oscillator. The article presents two different hardware realizations for parallel and series LC resonators.
作者:Michał Kurzela , Aleksander Burd
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2016SPIE
摘要:The main topic is the electronic system, designed and built to help car drivers during parking. It uses electromagnetism phenomena for making an estimation of arrangement of obstacles. The device works with close distance (about 5-15cm), depending on the material from which the o...
作者:Aleksander Burd , Piotr Z. Wieczorek
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2006SPIE
摘要:The paper presents a low-cost fast ramp circuit for use in sampling oscilloscope. A structure and a principle of operationof the circuit are described. The way of realisation and results of measurements are announced too. Usefulness of thecircuit for fast sampling oscilloscopes i...
作者:Aleksander Burd , Katarzyna Opalska
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2006SPIE
摘要:The paper concerns temperature compensation of time delay in ultra fast sampling circuits, used in digital oscilloscopes of gigahertz bandwidth. The main source of thermal instability appears to be step recovery diode used for sampling pulses generation, so the effort was taken t...
作者:Aleksander Burd , Marcin Grajda , Katarzyna Opalska
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2005SPIE
摘要:The paper presents design of a random repetitive sampling oscilloscope time-base circuit. The measurement system based on the pulse generator wih the precise pulse width control functionality is shown. The linearity measurements were performed and employed to verify the time-base...
作者:Aleksander Burd , Katarzyna Opalska
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2007SPIE
摘要:The paper presents a low-cost trigger circuit for use in sampling oscilloscope with bandwidth in order of hundreds ofMHz. The presented dual-step trigger circuit provides relatively high bandwidth because of significant reduction ofpossibility of incorrect turning on in trigger c...
作者:Katarzyna Opalska , Aleksander Burd
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2008SPIE
摘要:The paper illustrates an essential influence of skin effect on results of time-domain reflectometry technique applied todiagnosis of DSL transmission line. Skin effect (frequency-dependent ohmic losses dependent on geometry andmaterial of the wire) appeared to be a phenomenon mai...
作者:Aleksander Burd , Stefan Misiaszek
来源:[C].SPIE Optics + Optoelectronics2005SPIE
摘要:The paper presents results of comparative analysis of some basic properties of multicavity photoacoustic Helmholtz cells. The analysed cells were three-cavity Helmholtz resonators formed from a standard dual-cavity photoacoustic Helmholtz cell with an additional cavity connected ...
作者:Katarzyna Opalska , Aleksander Burd , Tomasz Owczarek
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2008SPIE
摘要:The paper presents a construction of digitally controlled, low cost, time domain relectometry unit designated forevaluation of quality of transmission lines. The "radar-like" TDR technique allows for detecting lines discontinuities,including shorts, open circuits, parasitic bridg...
作者:Piotr Z. Wieczorek , Aleksander Burd
来源:[C].Symposium on Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments (WILGA)2006SPIE
摘要:This paper presents the precise low current source circuit for use in a time measurement system with a time expansion. The circuit's design and structure are shown, with a special attention brought to the problems during the system construction. The results of essential measureme...

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