Circuit Operating Descriptions
7-1
7-1 Power Supply (Free Voltage)
(1) Comparsion between Linear Power Supply and S.M.P.S.
(a) Linear
Vreg
Vout
+
–
+
+
–
Vs
(Ns)
Vp
(Np)
REGULATOR
Common power
(Ex.220V 50Hz)
Fig. 7-1 Linear Power Supply
◆
Waveform/Description
Vs
t
0
Fig. 7-2
Vs
t
0
Fig. 7-3
Vout
t
0
Fig. 7-4
Input : Common power to transformer (Vp).
The output Vs of transformer is determined by the ratio
of 1st Np and 2nd Ns.
Vs = (Ns/Np) x Vp
Vout is output (DC) by diode and condensor.
7. Circuit Operating Descriptions
Содержание SV-DVD40
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