Circuit Descriptions
5-2
Advantages and disadvantages of linear power supply
1) Advantages : Little noise because the output
waveform of transformer is sine wave.
2) Disadvantages :
Œ
Additional margin is required because Vs is chan-
ged (depending on power source). (The regulator
loss is caused by margin design).
´
Greater core size and condensor capacity are ne-
eded, because the transformer works on a single
power frequency.
5-1-1 (b) S.M.P.S. (Pulse width modulation method)
v
Vreg
Vout
0
t
Change by common power
Regulator loss
Fig. 5-5
Terms
1) 1st : Common power input to 1st winding.
2) 2nd : Circuit followings output winding of transformer.
3) F (Frequency) : Switching frequency (T : Switching cycle)
4) Duty : (Ton/T) x 100
Transformer
Vout
(Np)
(Vp)
Switch
Vs switch
I switch
Vin
ON/OFF Control
+
–
+
–
+
+
+
–
(Vs)
(Ns)
REGULATOR
Fig. 5-6
Содержание DVC-605U
Страница 59: ...4 24 Disassembly and Reaasembly MEMO ...
Страница 79: ...Circuit Descriptions 5 20 MEMO ...
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Страница 94: ...Exploded Views 7 3 7 2 Deck Assembly 107 906 108 TS16391 ...
Страница 95: ...Exploded Views 7 4 MEMO ...
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Страница 99: ...Block Diagram 9 2 MEMO ...
Страница 101: ...PCB Diagrams 10 2 10 1 S M P S ...
Страница 102: ...PCB Diagrams 10 3 10 2 Main COMPONENT SIDE SOLDER SIDE ...
Страница 103: ...PCB Diagrams 10 4 10 3 Jack ...
Страница 104: ...PCB Diagrams 10 5 10 4 Front COMPONENT SIDE SOLDER SIDE ...
Страница 105: ...PCB Diagrams 10 6 10 5 Key COMPONENT SIDE SOLDER SIDE ...
Страница 106: ...PCB Diagrams 10 7 10 6 Deck 10 8 Sensor 10 7 Motor 10 9 Switch ...
Страница 107: ...PCB Diagrams 10 8 MEMO ...
Страница 108: ...11 1 11 Wiring Diagram ...
Страница 109: ...Wiring Diagram 11 2 MEMO ...
Страница 111: ...Schematic Diagrams 12 2 12 1 S M P S ...
Страница 112: ...Schematic Diagrams 12 3 12 2 Main Micom ...
Страница 113: ...Schematic Diagrams 12 4 12 3 Servo ...
Страница 114: ...Schematic Diagrams 12 5 12 4 RF ...
Страница 115: ...Schematic Diagrams 12 6 12 5 Data Processor ...
Страница 116: ...Schematic Diagrams 12 7 12 6 AV Decoder ...
Страница 117: ...Schematic Diagrams 12 8 12 7 Video ...
Страница 118: ...Schematic Diagrams 12 9 12 8 Audio ...
Страница 119: ...Schematic Diagrams 12 10 12 9 Audio 5 1 Channel ...
Страница 120: ...Schematic Diagrams 12 11 12 10 AV Interface ...
Страница 121: ...Schematic Diagrams 12 12 12 11 Front Micom ...
Страница 122: ...Schematic Diagrams 12 13 12 12 Key ...
Страница 123: ...Schematic Diagrams 12 14 12 13 Deck ...
Страница 124: ...Schematic Diagrams 12 15 12 14 Motor Switch Sensor ...
Страница 125: ...Schematic Diagrams 12 16 12 15 Remote Control ...