Samsung Electronics
2-1
2-1-1 Comparison between linear power supply and SMPS
2-1-1(a) LINEAR
Fig. 2-1
Input : Common power to transformer(Vp)
Fig. 2-2
The output Vs of transformer is determined by the ratio of
1st Np and 2st Ns.
Vs = (Ns/Np) x Vp
Fig. 2-3
Vout is output (DC) by diode and
condensor.
Fig. 2-4
2. Circuit Operating Description
2-1 SMPS circuit description
Vreg
Vout
+
–
+
+
–
Vs
(Ns)
Vp
(Np)
Regulator
Common power
(Ex.220V60Hz)
Vs
t
0
220 2 V
20us
Vs
t
0
Vout
t
0
3
Waveform/Description
Summary of Contents for DVD-905
Page 5: ...Precautions 1 4 Samsung Electronics MEMO ...
Page 7: ...Product Specifications 3 2 Samsung Electronics MEMO ...
Page 87: ...Thoubleshooting 5 26 Samsung Electronics MEMO ...
Page 93: ...Exploded View and Parts List 6 6 Samsung Electronics 6 3 Remote Control ...
Page 121: ...Electrical Parts List 7 28 Samsung Electronics MEMO ...
Page 123: ...Block Diagrams 8 2 Samsung Electronics MEMO ...
Page 124: ...Samsung Electronics 10 1 10 Wiring Diagram ...
Page 125: ...Wiring Diagrams 10 2 Samsung Electronics MEMO ...
Page 127: ...Schematic Diagrams 11 2 Samsung Electronics 11 1 SMPS ...
Page 128: ...Schematic Diagrams Samsung Electronics 11 3 11 2 FRONT ...
Page 129: ...Schematic Diagrams 11 4 Samsung Electronics 11 3 MICOM ...
Page 131: ...Schematic Diagrams 11 6 Samsung Electronics 11 5 VIDEO 1 2 3 4 5 7 8 9 10 6 11 12 13 14 15 16 ...
Page 133: ...Schematic Diagrams 11 8 Samsung Electronics 11 7 AUDIO 2 ...
Page 134: ...Schematic Diagrams Samsung Electronics 11 9 11 8 DATA PROCESSOR ...
Page 135: ...Schematic Diagrams 11 10 Samsung Electronics 11 9 A V DECORDER ...
Page 136: ...Schematic Diagrams Samsung Electronics 11 11 11 10 PICK UP DECK ...