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RECTIFICATION

RECTIFICATION. X-RAY CIRCUIT. Whenever the art of medicine is loved, there is also love for humanity. Hippocrates. RECTIFICATION. PROCESS BY WHICH ALTERNATING CURRENT IS CHANGED TO PULSATING DIRECT CURRENT. A/C GENERATOR A/C CURRENT 1 PHASE. A/C ( UNRECTIFIED)- FREQUENCY 60 Hz.

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RECTIFICATION

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  1. RECTIFICATION

  2. X-RAY CIRCUIT

  3. Whenever the art of medicine is loved, there is also love for humanity. Hippocrates

  4. RECTIFICATION PROCESS BY WHICH ALTERNATING CURRENT IS CHANGED TO PULSATING DIRECT CURRENT

  5. A/C GENERATOR A/C CURRENT1 PHASE A/C ( UNRECTIFIED)- FREQUENCY 60 Hz

  6. 60 POSITIVE PULSES/SEC 60 NEGATIVE PULSES/SEC

  7. 60 POSITIVE PULSES 60 NEGATIVE PULSES 120 PULSES 60 FULL CYCLES

  8. D/C GENERATOR D/C PULSATING CURRENT

  9. Pulsating D/C vs A/CHow an Electric Generator Works

  10. BATTERY – CURRENT OUTPUT STEADY D/C

  11. A/C vs Steady D/Crectification

  12. D/C HALF WAVE RECTIFIED D/C HALF-WAVE – 60 POSITIVE PULSES/SEC NEGATIVE PULSES ARE SUPPRESSED 1 PULSE/CYCLE

  13. D/C FULL WAVE RECTIFIED D/C HALF-WAVE – 120 POSITIVE PULSES/SEC 2 PULSES/CYCLE

  14. THREE PHASE POWER http://www.shermanlab.com/xmwang/javappl/acMotor1.html

  15. D/C -3 PHASE 6 PULSE CURRENT D/C 3 PHASE 6 PULSE – 6 PULSES/CYCLE

  16. D/C - 3 PHASE 12 PULSE D/C 3 PHASE 12 PULSE – 12 PULSES/CYCLE

  17. DIODES OR VALVE TUBES HELP RECTIFY A/C CURRENT ELECTRONS DIODE VALVE TUBE

  18. VALVE TUBE

  19. DIODE

  20. X-RAY TUBE FORWARD BIAS

  21. REVERSE BIAS + - NO X-RAY

  22. FORWARD vs REVERSE

  23. RECTIFICATION TYPES • HALF-WAVE • FULL WAVE • THREE PHASE SIX PULSE • THREE PHASE TWELVE PULSE • HIGH FREQUENCY SINGLE PHASE

  24. RECTIFICATION – I PHASE NO RECTIFICATION HALF-WAVE FULL-WAVE

  25. THREE PHASE POWER http://www.shermanlab.com/xmwang/javappl/acMotor1.html

  26. 3 PHASE RECTIFICATION

  27. 3 PHASE RECTIFICATION

  28. HIGH FREQUENCY RECTIFICATION

  29. HALF-WAVE RECTIFICATION

  30. HALF-WAVE RECTIFICATION

  31. FULL-WAVE RECTIFICATION

  32. FULL-WAVE RECTIFICATION

  33. FULL-WAVE RECTIFICATION

  34. 3 PHASE 6 PULSE

  35. 3 PHASE 12 PULSE

  36. HIGH FREQUENCY

  37. RIPPLE

  38. VOLTAGE RIPPLE • HALF WAVE------------------- 100% • FULL WAVE ------------------ 100% • 3 PHASE 6 PULSE ----------- 13% • 3 PHASE 12 PULSE ---------- 4% • HIGH FREQUENCY ---------- <1%

  39. RIPPLE 200% 100% 100%

  40. RIPPLE-3 PHASE 13%

  41. RIPPLE-HIGH FREQUENCY <1%

  42. Home-made x-ray apparatus

  43. CHECKING FAILURE OF RECTIFICATION SYSTEM • SPINNING TOP TEST – 1 PHASE EQUIPMENT • SYNCHRONOUS SPINNING TOP TEST- 3 PHASE WITH LONGER EXPOSURE TIMES • OSCILLOSCOPE- 3 PHASE EQUIPMENT WITH SHORT EXPOSURE TIMES

  44. SPINNING TOP TEST

  45. RESULT OF SPINNING TOP TEST- 1 PHASE - DASHES

  46. HALF- WAVE RECTIFICATION # OF DASHES = TIME (SEC) x 60 PULSES

  47. FULL- WAVE RECTIFICATION # OF DASHES = TIME (SEC) x 120 PULSES

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