1. COMPUTERIZED SURVEY OF CURRENT INTENSITY IN SERIES RLC CIRCUIT VARYING POWER FREQUENCY " Integration of InnoVativE MeThodologies for ELectrical Measurements VET-ELM Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

2. WORKING GROUP Prof. Salvatore Aviani dirigente scolastico Prof. Biagio De Rosa vicepreside Prof. Mariarosaria Damato inglese Prof. Vincenzo DAntonio elettrotecnica/sistemi Prof. Lomonte Paolo TDP/Impianti elettrici Prof. Roberto Scognamiglio elettronica Prof. Vincenzo Veneruso elettrotecnica/sistemi Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

3. INDEX INTRODUCTION EDUCATIONAL OBJECTIVES OF THE MEASURE PREREQUISITES DESCRIPTION OF THE EXERCISE COMPONENTS AND INSTRUMENTS Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

4. INDEX TEST RUN THEORETICAL FORMULAS COMPUTERIZED DEVELOPMENT OF THE MEASUREMENT RESULTS SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT MULTISIM EVALUATION GRID Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

5. INTRODUCTION Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

6. INTRODUCTION IN ITALY THE TEACHING OF "ELECTRICAL MEASUREMENT" AS PART OF THE CURRICULUM OF STUDIES " INDUSTRIAL EXPERT - ELECTRICAL AND AUTOMATION SPECIALIZAZTION" IS NO LONGER AN AUTONOMUS SUBJECT. THE SUBJECT S CONTENT IS PART OF ELECTRICAL ENGINEERING INCLUDING LABORATORY HOURS DURING WHICH STUDENTS ARE TESTED THROUGH EXERCISES. I.T.I.S. A. Volta-Napoli

7. INTRODUCTION IN PARTICULAR THE SUBJECT "AUTOMATIC ELECTRIC SYSTEMS", HAS BEEN INTRODUCED, WHICH MOREOVER, HAS THE TASK OF CREATING A SYNTHESIS BETWEEN THE ACQUIRED KNOWLEDGE DURING THE ENTIRE COURSE OF STUDY, INCLUDING A CONTINUOUS LINK WITH OTHER DISCIPLINES, FIRST OF ALL ELECTRICAL AND ELECTRONICS ENGINEERING COMPUTING. I.T.I.S. A. Volta-Napoli

8. INTRODUCTION ON THE STRENGTH OF THESE INNOVATIONS, EVEN "ELECTRICAL MEASUREMENT TEACHING HAS EXPERIENCED AN UPGRADE, INTRODUCING ELEMENTS OF ELECTRONICS AND COMPUTERS. HERE BELOW YOU CAN SEE AN EXAMPLE OF A "MEASURES EXERCISE " I.T.I.S. A. Volta-Napoli

9. EDUCATIONAL OBJECTIVES OF THE MEASURE Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

10. EDUCATIONAL OBJECTIVES OF THE MEASURE AT THE END OF THE EXERCISE STUDENTS WILL: 1.GAIN AWARENESS OF THE CONDUCT OF SIMPLE AC CIRCUITS AND OF THE PHENOMENON OF RESONANCE 2.ACQUIRE THE ABILITY TO INTEGRATE KNOWLEDGE OF THE FOLLOWING DISCIPLINES: ELECTRIC MEASURES ELECTRONICS AUTOMATIC SYSTEMS I.T.I.S. A. Volta-Napoli

11. PREREQUISITES Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

12. PREREQUISITES PUPILS SHOULD KNOW: BASIC PRINCIPLES OF ALTERNATING CURRENT; BASIC PRINCIPLES OF ELECTRICAL MEASUREMENT (MEASURES); SOFTWARE USUALLY USED IN A PC; SOFTWARE MICROSOFT EXCEL. I.T.I.S. A. Volta-Napoli

13. DESCRIPTION OF THE EXERCISE Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

14. DESCRIPTION OF THE EXERCISE THE EXERCISE PLANS TO MAKE A SERIES OF CURRENT MEASUREMENT IN ORDER TO DESCRIBE THE CONDUCT OF A A.C. CIRCUIT WHEN POWER FREQUENCY CHANGES. THE RESULTS ARE INPUTTED ON A PERSONAL COMPUTER, AND TRASFERRED THROUGH FILE TO THE SOFTWARE EXCEL FOR GRAPHIC AND ANALYTICAL PROCESSING OF DATA. I.T.I.S. A. Volta-Napoli

15. DESCRIPTION OF THE EXERCISE STEP OF WORK: 1 - DIRECT MEASUREMENT OF CURRENT IN A SERIES RLC CIRCUIT POWERED WITH VARIABLE FREQUENCY 2 - TRANSFER OF DIGITAL DATA MEASURED BY A DIGITAL MULTIMETRO ON A PERSONAL COMPUTER 3 - ANALYSIS OF THE BEHAVIOUR OF COMPONENTS AND CIRCUIT THROUGH AN EXCEL SPREADSHEET. I.T.I.S. A. Volta-Napoli

16. DESCRIPTION OF THE EXERCISE THE FOLLOWING FIGURE SHOWS THE SETUP CIRCUIT. I.T.I.S. A. Volta-Napoli Figure 1

17. COMPONENTS AND INSTRUMENTS Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

18. COMPONENTS AND INSTRUMENTS A FUNCTION GENERATOR WITH VARIABLE FREQUENCY FROM 10 A 20.000 Hz A RESISTOR: 1 kOhm AN INDUCTANCE: 100 mH A CAPACITOR: 330 nF DIGITAL MULTIMETER DM3051 RIGOLI COMPLETE WITH USB CONNECTION AND SOFTWARE INTERFACE PERSONAL COMPUTER SOFTWARE MICROSOFT EXCEL I.T.I.S. A. Volta-Napoli

19. COMPONENTS AND INSTRUMENTS DIGITAL MULTIMETER FEATURES: HIGH PRECISION MULTIFUNCTIONAL SUITABLE FOR AUTOMATIC DATA ACQUISITION ACCESSORY WITH N. 2 SOFTWARE INTERFACE WITH PC (ULTRASENSOR AND ULTRALOGGER) I.T.I.S. A. Volta-Napoli

20. COMPONENTS AND INSTRUMENTS DIGITAL MULTIMETER PICTURES I.T.I.S. A. Volta-Napoli

21. COMPONENTS AND INSTRUMENTS DIGITAL MULTIMETER: DATASHEET MULTIMETER I.T.I.S. A. Volta-Napoli

22. COMPONENTS AND INSTRUMENTS DIMENSIONING OF CIRCUIT COMPONENTS : COMPONENTS HAVE BEEN CHOSEN IN ORDER TO OBTAIN A RESONANCE FREQUENCY OF APPROXIMATELY 870 Hz AND TO LIMIT THE CIRCUIT CURRENT TO A VALUE NOT EXCEEDING 5 mA I.T.I.S. A. Volta-Napoli

23. TEST RUN Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

24. TEST RUN THE CIRCUIT WILL POWERED BY A SINUSOIDAL SIGNAL VARIABLE FREQUENCY FROM 10 TO 15000 Hz N. 25 MEASURES WILL BE MADE FOR VALUES OF GROWING FREQUENCY. BY INCREASING THE FREQUENCY THE CURRENTE VALUE WILL INCREASE ACHIEVING ITS MAXIMUM VALUE AT THE RESONANCE RATE. AFTER REACHING ITS RESONANCE RATE ITS VALUE WILL DECREASE. I.T.I.S. A. Volta-Napoli

25. TEST RUN I.T.I.S. A. Volta-Napoli

26. THEORETICAL FORMULA Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

27. THEORETICAL FORMULA V = Z I Z = R + j (XL – XC) XL = 2*π*f*L XC = 1/(2*π*C ) fr = 1/(2π*L*C ) 1/2 I = V / Z I.T.I.S. A. Volta-Napoli

28. COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

29. COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS THE RESULTS OF THE MEASUREMENTS ARE TRANSFERRED TO THE SOFTWARE TOOL KIT. ONCE ACQUIRED THE RESULTS ON AN INTERCHANGE FILE, DATA ARE INSERTED INTO AN EXCEL FILE AND PROPERLY PROCESSED I.T.I.S. A. Volta-Napoli

30. COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS I.T.I.S. A. Volta-Napoli

31. COMPUTERIZED DEVELOPMENT OF THE MEASUREMENTS RESULTS I.T.I.S. A. Volta-Napoli

32. SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT MULTISIM Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

33. SIMULATION WITH SOFTWARE NATIONAL INSTRUMENT MULTISIM FOR EDUCATIONAL USE, A MULTISIM SOFTWARE SIMULATION WAS MADE, BEFORE THE LAB TESTS. I.T.I.S. A. Volta-Napoli

34. SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM ON THE FOLLOWING PAGES WILL BE SHOWN : 1 – THE CIRCUIT DIAGRAM 2 – PERFORMANCE CHART WITH THE FUCTION OF CURRENT INTENSITY - FREQUENCY 3 - SURVEY ON THE CHART OF THE FREQUENCY OF RESONANCE I.T.I.S. A. Volta-Napoli

35. SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM THE CIRCUIT DIAGRAM I.T.I.S. A. Volta-Napoli

36. SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM PERFORMANCE CHART WITH THE FUNCTION OF CURRENT INTENSITY/ FREQUENCY (BODE) I.T.I.S. A. Volta-Napoli

37. SIMULATION SOFTWARE WITH NATIONAL INSTRUMENT MULTISIM I.T.I.S. A. Volta-Napoli SURVEY ON THE CHART OF THE FREQUENCY OF RESONANCE

38. EVALUATION GRID Leonardo da Vinci PARTNERSHIPS DG Education and Culture ISTITUTO TECNICO INDUSTRIALE STATALE ALESSANDRO VOLTA NAPOLI

39. EVALUATION GRID I.T.I.S. A. Volta-Napoli

40. EVALUATION GRID I.T.I.S. A. Volta-Napoli

41. EVALUATION GRID I.T.I.S. A. Volta-Napoli