Daewoo 14C3, Service Manual

Page: 30 / 52

8
8-2-1. STR-F6653 oscillating operation
Shutdown voltage 11V
16V (TY P.)
O.V.P.volt age 20.5V
Vin
t
Waveform of Vin pin voltage at start- up
TO PIN4 SM PS
2
3
1
5
GND
R804 C850
OCP/FB From PIN 6
SM PS
(FEEDBACK)
SOURCE R808
DRAIN
DRIVE
OSC
Rg2
Rg1
Comp.2
Comp.1
C1 R1
STR-F6653
1.35mA
V th(1)
V th(2)
Oscillating operation
APPENDIX
FUNCTIONAL DESCRIPTION