Samsung D61B Training Manual page 56

Circuit Operation Description
Fig. 11. Resonance Circuit
Fig. 12. FET Vds Waveform of the Resonance Circuit
3) PRC Circuit (Vscan, Vset, Ve)
[Function Description]
This power employs 2 kinds of PRC IC's (STR-G6353 for Vscan and Vset, STR-A6351 for Ve). packaging, these IC
have the same behavior, The Vscan circuit is explained as an example.
When voltage is applied, the voltage from the coil at Pins 11 ~ 16 of T8331 applies to the Vcc terminal (Pin 4) of
the IC. When this voltage eaches the starting voltage, the oscillation begins.
Samsung Electronics 6-17