TC1475 / TC2175 / TF2139
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Circuit Analysis
The voltage controlling LED get from 110V/130V by sampling circuit
buildup by R552~R554、RP551、VD560、V553. The voltage from
collector of V553, connected with the LED negative inner
N501,controlling the light emitted by LED.
D.Rectifier and Filter Circuit：
Switch-mode transformer T511 supply different working voltage for
chassis by its 4 secondary windings and separate the power supply of
chassis from mains supply..
2、WIDE POWER（90V~260V）IC-W65XX Introduction：
A、W65XX Block diagram(Connection diagram)：
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