Service manual CP 385 / CP785
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5-8 Power supply (STR-F6653)
5-8 -1 STR-F6653 general description
The STR-F6653 is an hybrid IC with a build-in MOSFET and control IC, designed for flyback
converter type switch mode power supply applications.
5-8 -2 Power supply primary part operations
An oscillator generates pulses signals which turn on and off a MOSFET transistor.
* Start -up circuit: V
IN
The start-up circuit is used to start and stop the operation of the control IC, by detecting a voltage
appearing at V
IN
pin (pin 4).
R819
D802
D801
D803
D804
C804
C803
R802
C806
C805
Main AC voltage
2
7
6
4
D805
R805
L801
4
Ground
Drain
Vin
T801 SMPS TRANS
3
I801 STR-F6653
5
Power supply start-up circuit
Summary of Contents for DTA-20 T1
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Page 34: ...Service manual CP 385 CP785 33 5 Circuit description 5 1 Block diagram...
Page 39: ...Service manual CP 385 CP785 38 Chassis block diagram IF...
Page 43: ...Service manual CP 385 CP785 42 Sound signal flow diagram...
Page 70: ...69 Service Manual cp 385 cp 785 7 Exploded View 7 1 DTA 20T1...
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