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C-8 PFC CIRCUIT
The PFC CKT is combined with U991A, D901A, T901A..., it is an active type, called" Booster Follower"
circuit.
The feedback points of U991A is not only connected to C906, but also the AC line-in voltage of C901A which
the voltage waveform shape is same as the line-in voltage.
The follower booster circuit can smooth the input current to improve PF value.
D. TDA4855/4858 AUTOSYSNC DEFLECTION CONTROLLER
Figure (4) (5)
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