1. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 1 EET 422 EMC & COMPLIANCE ENGINEERING

2. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 2 TRIAC MT1 MT2 G MT1 MT2 G

3. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 3

4. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 4 MT2 +ve MT2 -ve

5. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 5 TRIGGER DIAC

6. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 6

7. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 7 TRIAC- DIAC LAMP DIMMER V in RVRV DIAC C VCVC TRIAC LAMP V BO

8. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 8 RVRV C V in VCVC I in V in I in VCVC VRVR I in leads V in by V C lags I in by 90 o V C lags V in by

9. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 9 V in VCVC + V BO - V BO

10. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 10 R V,min = 0R V,max VCVC V C and V in in phase V C lags V in by

11. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 11 TRIAC- DIAC LAMP DIMMER V in 240 V rms RVRV DIAC C VCVC TRIAC LAMP 100  V BO   

12. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 12 CLASS ACLASS C HARMONIC n ABSOLUTE LIMIT AMPERES ABSOLUTE LIMIT AMPERES % Fundamental 32.3030 x (power factor) 51.1410 70.777 90.405 110.333 130.213 n = 15  393 0.3 x (power factor)xI fundamental 0.1xI fundamental

13. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 13 P ON pf V OMN V ORN 0.707

14. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 14 I FRN I H3RN I H5RN I H9RN I H7RN I RN 0.6 0.325 0.1

15. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 15 3 rd Harmonic5 th Harmonic power factorpf0.707 fundamentalI FRN 0.6 1.44 A harmonic scalingI HRN I H3RN = 0.325I H5RN = 0.1 harmonic current I H,rms harmonic limitI Hlimit compliancePASS or FAILFAIL

16. Prof R T KennedyEMC & COMPLIANCE ENGINEERING 16 DIMMER & EMC V in 240 V rms RVRV DIAC C VCVC TRIAC LAMP 100  V BO  L