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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. ALTERNATING 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. ALTERNATING 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. BATTERY – CURRENT OUTPUT STEADY D/C

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

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

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

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

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

  14. X-RAY TUBE FORWARD BIAS

  15. REVERSE BIAS + - NO X-RAY

  16. FORWARD vs REVERSE

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

  18. RECTIFICATION NO RECTIFICATION HALF-WAVE FULL-WAVE

  19. 3 PHASE RECTIFICATION

  20. 3 PHASE RECTIFICATION

  21. HIGH FREQUENCY RECTIFICATION

  22. HALF-WAVE RECTIFICATION

  23. HALF-WAVE RECTIFICATION

  24. FULL-WAVE RECTIFICATION

  25. FULL-WAVE RECTIFICATION

  26. FULL-WAVE RECTIFICATION

  27. 3 PHASE 6 PULSE

  28. 3 PHASE 12 PULSE

  29. HIGH FREQUENCY

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

  31. RIPPLE 100% 100% 100%

  32. RIPPLE-3 PHASE 13%

  33. RIPPLE-HIGH FREQUENCY <1%

  34. Home-made x-ray apparatus

  35. 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

  36. SPINNING TOP TEST

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

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

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

  40. RESULT OF SYNCHRONOUS SPINNING TOP TEST-3PHASEARC

  41. 3 PHASE RECTIFICATION-LONGER EXPOSURE TIME DEG. OF ARC = 360°/ sec x TIME (sec)

  42. UTILIZING OSCILLOSCOPE

  43. UTILIZING OSCILLOSCOPERECTIFIED SYSTEM

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