Samsung DVD-E360, Service Manual

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6. Schematic Diagrams
b) If load of 4.4V terminal increase (or AC inout voltage decrease) and Vout decrease over 4.4V, Then : PICS2 “R” potential decrease over 2.5V→PICS2 A-K BASE Current decrease→PICS2 A-K Current decrease→PICS1 DIODE Current decrease→ PICS1 C-E
Current decrease→PICS1 C-E Voltage increase→PICS1 F-B Voltage increase→OUT DUTY increase TRANS Primary Cuttent Increase→TRANS Primary Power increase→Vout maintain 4.4V→Vout increase
- PRD31, PRD32 : Reduce 4.4V overshoot.
- PRS32, PCS32 : Prevent PICS2 oscillation (for phase correction).
6.2.3. Internal Block Diagram (Internal Block Diagram of S.M.P.S Circuit)
• Internal Block Diagram
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