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2.1.3.3 Power Factor Correction
The Power Factor Correction (PFC) like a Boost converter . The AC mains voltage is
rectified by a bridge and the rectified voltage delivered the the boost converter . This using a
switching technique ,boost the recdtified input voltage to a regulated DC output voltage Vo . The
boost converter consists of a boost inductor (L) , a controlled power switch (Q) , a catch diode
(D) , an output capacitor (Co) ,and a PFC controller . PFC’s goal id to shape the input current in
a sinsoidal fashion , in-phase with the input sinusoidal voltage .
2.1.3.4 SPS BLOCK DIAGRAM
Snubber circuit
The snubber circuit, which is reduce the spike voltage .This had its benefits in
the Safe Operating Area (SOA) of the semiconductors ,and it lowers the
spectral content if any radiated RFI thus radiating less RF energy.
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Summary of Contents for PB8220 - XGA DLP Projector
Page 14: ...Figure 1 Major Blemish Two Zone Screen Critical Zone center 25 Non Critical Zone 13 ...
Page 33: ...Installation 15 User s Guide 4 Video device or VCR 5 Output monitor ...
Page 49: ...42 ...
Page 50: ...43 ...
Page 51: ...8 Lamp Replacement 44 ...
Page 52: ...45 ...
Page 53: ...46 ...
Page 54: ...9 Shutdown 47 ...
Page 89: ...Chapter 6 Trouble Shooting 82 ...
Page 90: ...83 ...
Page 98: ...6 DMD Board Trouble Shooting Guide 91 ...
Page 99: ...92 ...
Page 100: ...Chapter 7 Schematics and Assy Drawing 93 ...
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Page 105: ...Form No ACM0 0B 003 24 010918 ...
Page 106: ...Form No ACM0 0B 003 24 010918 ...
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