Circuit Operating Descriptions 13-1; Power - Samsung DVD-P360/CDM Service Manual

13. Circuit Operating Descriptions

13-1 Power

13-1-1 Comparsion between Linear Power Supply and S.M.P.S.
13-1-1 (a) Linear
Common power
(Ex.120V 60Hz)
◆ Waveform/Description
Vp
0
Vs
0
Vout
0
Samsung Electronics
+
Vp
–
(Np)
Fig.13-1 Linear Power Supply
t
Fig. 13-2
t
Fig. 13-3
Fig. 13-4
+
Vs
–
(Ns)
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.
t
Vin
REGULATOR
+
Vreg
13-1