prof.Ing. Jaroslav Boháček, DrSc.

 

Curriculum vitae

1964 Ing.

1977 CSc.

1980 Assoc. Prof.

1991 DrSc.

1993 Professor

With FEE CTU since 1964.

Chairman of the Board of Metrology of the Czech Office for Standards, Metrology and Testing.
Awarded the Silver Felber´s Medal.

 

Teaching activity

Lectures and laboratory exercises of the following courses:

A0M38MET Metrology  (master study course)

XP38MPM Methods for Precision Measurement of Electrical Quantities and Measurement Data Processing (doctoral study course)

CTU 01 Metrology of Electrical Quantities (ATHENS Programme course)

 

Research interests

Precision impedance measurements in the audiofrequency range.

Metrological applicability of the AC quantum Hall effect.

 

Research stays abroad

Physikalisch-Technische Bundesanstalt, Braunschweig, Germany (1992)

National Physical Laboratory, Teddington, United Kingdom (1993, 1994, 2005)

Bureau International des Poids et Mesures, Sevres, France (1995)

Electrotechnical Laboratory, Tsukuba, Japan (1997, 1999)

National Research Council, Ottawa, Canada (1998, 2000)

National Measurement Laboratory, Lindfield, Australia (1999)

Istituto Elettrotecnico Nazionale Galileo Ferraris, Turin, Italy (2001)

National Metrology Laboratory, Pretoria, South Africa (2002)

Sveriges Provnings- och Forskningsinstitut, Boras, Sweden (2003)

 

Participation in European projects

SMT project "Modular System for the Calibration of Capacitance Standards Based on the Quantum Hall Effect" (co-ordination Physikalisch-Technische Bundesanstalt, Braunschweig, activity 5.2 "12.9 kW DC-AC Resistor")

EUROMET project No. 432 "Frequency Performance of 12 906.4 W and 6 453.2 W Reference Resistors for AC Quantum Hall Effect Experiments" (co-ordinator J. Bohacek, participating institutions Bureau International des Poids et Mesures, Sevres, Eidgenössisches Amt für Messwesen, Wabern, National Physical Laboratory, Teddington, National Research Council, Ottawa, and Physikalisch-Technische Bundesanstalt, Braunschweig)

EUROMET project No. 607 "100mH Inductance Intercomparison" (co-ordinator L. Callegaro)

 

Co-ordination of projects supported by the Grant Agency of the Czech Republic

Project No. 102/96/0083 "Primary Standard of Resistance Based on the Quantum Hall Effect" (completed in 1998)

Project No. 102/98/1571 "Quantum Hall Effect Based Calibration of Capacitance Standards" (completed in 2000)

Project No. 102/02/1056 "Quantum Hall Effect Based Calibration of Inductance Standards" (completed in 2004)

 

Participation in research supported by the Ministry of Education, Youth and Sports of the Czech Republic

Program No. MSM6840770015 "Research of Methods and Systems for Measurement of Physical Quantities and Measured Data Processing"

 

Course books

Boháček, J.: Metrologie elektrických veličin (Metrology of Electrical Quantities). Publishing House of the CTU, Prague 1994.

Boháček, J.: Metrologie (Metrology). Publishing House of the CTU, Prague 2011, 2017, 2019.

Boháček, J.: Metrology. Publishing House of the CTU, Prague 2013.

 

Selected Journal Papers

Hartland, A., Kibble, B.P., Rodgers, P.J., Bohacek, J.: AC Measurements of the Quantized Hall Resistance. IEEE Trans. Instr. Meas., 44 (1995), No. 2, pp. 245-248.

Bohacek, J., Svoboda, P., Vasek, P.: AC QHE-Based Calibration of Resistance Standards. IEEE Trans. Instr. Meas., 46 (1997), No. 2, pp. 273-275.

Bohacek, J.: AC QHE-Based Resistance and Capacitance Calibrations. IEE Proc.-Sci. Meas. Technol., 147 (2000), No. 4, pp. 190-192.

Bohacek, J., Wood, B.M.: Octofilar Resistors with Calculable Frequency Dependence. Metrologia, 38 (2001), No. 3, pp. 241-247.

Bohacek, J.: EUROMET Project 432: Frequency Performance of 12 906 W and 6 453 W Reference Resistors for AC Quantum Hall Effect Experiments. Metrologia, 39 (2002), No. 2, pp. 231-237.

Melcher, J., Schurr, J., Pierz, K., Williams, J.M., Giblin, S.P., Cabiati, F., Callegaro, L., Marullo, G., Cassiago C., Jeckelmann, B., Jeanneret, B., Overnay, F., Bohacek, J., Riha, J., Power, O., Murray, J., Nunes, M., Lobo, M., Godinho, I.: The European ACQHE Project: Modular System for the Calibration of Capacitance Standards Based on the Quantum Hall Effect. IEEE Trans. Instr. Meas., 52 (2003), No. 2, pp. 563-568.

Bohacek, J.: A QHE-Based System for Calibrating Impedance Standards. IEEE Trans. Instr. Meas., 53 (2004), No. 4, pp. 977-980.

Callegaro, L., D´Elia, V., Bohacek, J.: Four-Terminal-Pair Inductance Comparison Between INRIM and CTU. IEEE Trans. Instr. Meas., 58 (2009), No. 1, pp. 87-93.

Sedlacek, R., Bohacek, J.: Bridges for Calibrating Four-Terminal-Pair Standards of Self-Inductance at Frequencies up to 10 kHz. Meas. Sci. Technol. 20 (2009) 025105, doi: 10.1088/0957-0233/20/2/025105.

Kucera, J., Vollmer, E., Schurr, J., Bohacek, J.: Calculable Resistors of Coaxial Design. Meas. Sci. Technol. 20 (2009), 095104, doi: 10.1088/0957-0233/20/9/095104.

Kucera, J., Sedlacek, R., Bohacek, J.: An HF Coaxial Bridge for Measuring Impedance Ratios Up to 1 MHz. Meas. Sci. Technol. 23 (2012) 085004 (8 pp.), doi: 10.1088/0957-0233/23/8/085004.

Boháček J.: Měřicí systém s referenčním imitátorem malých odporů (Measuring System with a Reference Imitator of Low Resistances). Metrologie, 27 (2018), No. 2, pp. 2-4.

Boháček, J.: Oktofiláirní bočník (Octofilar Shunt). Metrologie, 28 (2019), No. 2, pp. 17-19.

Boháček, J.: Měřicí můstky vyvažované proměnnými napětími (Measurement Bridges Balanced by Variable Voltages).Metrologie, 28 (2019), No. 3, pp. 12-15.

Boháček, J., Šimůnek, M., Bíba, L.: Kapacitní etalony s keramickým dielektrikem (Capacitance Standards with a Ceramic Dielectric). Metrologie, 28 (2019), No. 4, pp. 1-3.

 

Selected Conference Papers since 2005

Bohacek, J.: Calibrating Standards of Self- and Mutual Inductance. VI Semetro Proceedings, pp. 42-44 (Rio de Janeiro 2005).

Bohacek, J., Sedlacek, R., Kucera, J.: Inductively Coupled Ratio Arms for High-Frequency Bridges. 2006 Conference on Precision Electromagnetic Measurements Digest, pp. 470-471 (Turin 2006).

Bohacek, J.: Reference Resistors for Calibration of Wideband LCR Meters. IMEKO XVIII World Congress (CD-R), TC-4 – Measurement of Electrical Quantities (Rio de Janeiro 2006).

Bohacek, J., Kucera, J.: Calibration of Rogowski Coils in Audiofrequency Range. 3rd International Conference on Metrology (CD-R) (Tel Aviv 2006).

Callegaro, L., D´Elia V., Bohacek, J.: Four Terminal-Pair Inductance Comparison between INRIM and CTU. 2007 IEEE Instrumentation and Measurement Technology Conference Proceedings (CD-R), Session We2ws - Electrical and Power Measurements 1, p. 28 (Warsaw 2007).

Bohacek, J.: Measurement of Frequency Dependences of Reference Resistors for Calibrating Wideband LCR Meters. 2007 NCSL International Workshop and Symposium Proceedings (CD-R), Session 8F - Electrical V - Waveform Metrology (Saint Paul 2007).

Bohacek, J., Kucera, J., Sedlacek, R.: Testing Calculable Resistors of Quadrifilar Design. 2008 Conference on Precision Electromagnetic Measurements Digest, pp. 274-275 (Broomfield 2008).

Bohacek, J., Sedlacek, R. , Kucera, J.: Four Terminal-Pair Coaxial Standards of Capacitance. IMEKO XIX World Congress Proceedings, pp. 805-808 (Lisbon 2009).

Kucera, J., Sedlacek, R., Bohacek, J.: A New Capacitance Device for Calibration of N:1 HF Inductive Voltage Dividers. 2010 Conference on Precision Electromagnetic Measurements Digest, pp. 390-391 (Daejeon 2010).

Bohacek, J., Horska, J. , Sedlacek, R.:  Comparison of Frequency Dependences of Resistance Standards Made from Surface Mount Resistors. 2010 Conference on Precision Electromagnetic Measurements Digest, pp. 647-648 (Daejeon 2010).

Bohacek, J., Sedlacek, R.: Bridges Balanced by Variable Voltages from Multichannel Generators. 2012 Conference on Precision Electromagnetic Measurements Digest, pp. 590-591 (Washington 2012).

Bohacek, J.: Measurement of Frequency Dependences of Low-Value Four-Terminal Resistance Standards. 19th IMEKO TC-4 Symposium Proceedings, pp. 26-29 (Barcelona 2013).

Kucera, J., Sedlacek, R., Bohacek, J.: Improved Calculable 4TP Coaxial Capacitance Standards. 2014 Conference on Precision Electromagnetic Measurements Digest, pp. 288-289 (Rio de Janeiro 2014).