TY - CONF AU - Petkovsek, M AU - Zoltán, István ED - Baldomir, Zajc ED - Andrej, Trost TI - Characterization of Soft-Magnetic Ring Cores at Low Magnetization Levels T2 - Proceedings of the Sixteenth International Electrotechnical and Computer Science Conference PB - Slovenska sekcija IEEE C1 - Portoroz T3 - Zbornik ... Elektrotehniške in računalniške konference, ISSN 1581-4572 ; 16. PY - 2007 SP - 315 EP - 318 PG - 4 UR - https://m2.mtmt.hu/api/publication/2614937 ID - 2614937 LA - English DB - MTMT ER - TY - GEN AU - Zoltán, István TI - A tudás mérése és a döntés felelőssége PY - 2007 UR - https://m2.mtmt.hu/api/publication/2614935 ID - 2614935 LA - Hungarian DB - MTMT ER - TY - BOOK AU - Zoltán, István TI - Az iskola nem csavargyár ET - 0 PB - Calin kft CY - Budapest PY - 2006 SP - 88 SN - 9632292537 UR - https://m2.mtmt.hu/api/publication/2614879 ID - 2614879 LA - Hungarian DB - MTMT ER - TY - CONF AU - Zoltán, István TI - Az iskola nem csavargyár T2 - Új bort új tömlőbe nemzetközi konferencia PY - 2006 UR - https://m2.mtmt.hu/api/publication/2614934 ID - 2614934 N1 - Cikk száma a konferencián vagy Kezdő oldal ismeretlen LA - Hungarian DB - MTMT ER - TY - CONF AU - Zoltán, István TI - Self-Managing Instruments T2 - Proceedings of the 2005 NCSLI Workshop and Symphosium PY - 2005 UR - https://m2.mtmt.hu/api/publication/2614932 ID - 2614932 LA - English DB - MTMT ER - TY - CONF AU - Zoltán, István TI - Jelenségek, tendenciák, tények az elbizonytalanított iskolában T2 - Látlelet az ifjúságról nemzetközi konferencia PY - 2005 UR - https://m2.mtmt.hu/api/publication/2614930 ID - 2614930 LA - Hungarian DB - MTMT ER - TY - GEN AU - Zoltán, István TI - Ki felel a diploma értékéért? PY - 2004 UR - https://m2.mtmt.hu/api/publication/2614928 ID - 2614928 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Zoltán, István TI - A tömegképzés tanári szemmel JF - MAGYAR FELSŐOKTATÁS J2 - MAGYAR FELSŐOKTATÁS VL - 13 PY - 2003 IS - 4-5-6 SP - 48 EP - 50 PG - 3 SN - 1215-3990 UR - https://m2.mtmt.hu/api/publication/2614927 ID - 2614927 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szepessy, Zs AU - Zoltán, István TI - Thermal Dynamic Model of Precision Wire-Wound Resistors JF - IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT J2 - IEEE T INSTRUM MEAS VL - 51 PY - 2002 IS - 5 SP - 930 EP - 934 PG - 5 SN - 0018-9456 DO - 10.1109/TIM.2002.806022 UR - https://m2.mtmt.hu/api/publication/2614926 ID - 2614926 AB - Wire-wound type resistors are often used as reference elements in high-precision electronic instruments of industrial frequencies (50-60 Hz). One of the main factors in the measurement uncertainty of these instruments is the "self-heating" affected drift of the built-in wire-wound resistors. The materials, geometry, construction and the thermal environment of the resistors determine the dynamics of the load-affected drift. This paper investigates a thermal model that can be used for on-line estimation of the load-affected thermal dynamic drift of commercially available encapsulated precision wire-wound resistors. Using the suggested model, the achievable estimation error of the relative change in resistance is below 10%. The model and the model-based on-line error estimation allow reducing the measurement uncertainty of industrial high-precision calibrators and extending the power range of standard resistors in laboratories. LA - English DB - MTMT ER - TY - JOUR AU - Vargha, B AU - Zoltán, István TI - Self-calibrating R-2R ladders JF - MEASUREMENT J2 - MEASUREMENT VL - 31 PY - 2002 IS - 3 SP - 201 EP - 207 PG - 7 SN - 0263-2241 DO - 10.1016/S0263-2241(01)00026-4 UR - https://m2.mtmt.hu/api/publication/2651673 ID - 2651673 AB - The paper presents a new calibration algorithm for current-output R-2R ladders. The widely used R-2R ladders are easy to realize as an integrated circuit, but the resistance tolerances limit their linearity properties. However, it is possible to achieve higher linearity with self-calibration techniques, A calibration algorithm can be applied to the current-output ladders, which are widely used as multiplying or fixed-reference DACs, The paper presents a new description of the current-output ladder as a basis of the calibration algorithm. The calibration algorithm, which uses the classical Gauss method for measuring the calibration coefficients, is discussed in detail, and the error budget is analyzed. Simulations were also made to verify the theory, (C) 2002 Published by Elsevier Science Ltd. LA - English DB - MTMT ER -