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After the horizontal and vertical DBF
voltage are separately generated, they are
amplified and are finally composed.
<Horizontal section>
The voltage (approx. 0.5Vp-p) of the pa-
rabola waveform shown in Fig. (a) is output
from the deflection processor IC (IC601),
and is amplified approx. 10 times by OP-
AMP (IC6A2). Thereafter, it is amplified to
50 to 60Vp-p by the transistor (Q7B1 and
Q7B2). The amplification ratio is deter-
mined by the ratio between the resistors
R7B6 and R7B7, being approx. 10 times.
Moreover, the waveform is reversed as
shown in Fig. (b) at this time. Then, it is
amplified to approx. 500Vp-p by DBF
transformer (T7A1). The coil ratio between
the primary and secondary coils of the DBF
transformer is 1: 10, being the amplifica-
tion ratio of approx. 10 times.
<Vertical section>
The voltage (approx. 1.0Vp-p) of the pa-
rabola waveform shown in Fig. (a) is output
from the deflection processor IC (IC601),
and is amplified approx. 4 times by OP-
AMP (IC6A2). Thereafter, it is amplified to
approx. 160Vp-p by the transistor (Q7A1).
The amplification ratio this time is deter-
mined by the ratio between R7A3 and
R7A4, being approx. 40 times.
The horizontal and vertical DBF voltages
amplified and reversed are composed by
applying vertically synchronous modulation
to the output on the secondary side as
shown in Fig. (c). The composed voltage
is input to Pin 12 of the flyback transformer
(T701).
Figure (a)
Figure (b)
Figure (c)
Vertical DBF
Horizontal DBF
Horizontal period
Vertical period
Summary of Contents for MultiSync FP1355 FP1355 FP1355
Page 23: ...1 17 Q502 Q502 Damper diode Current waveform fh 106k ...
Page 25: ...1 19 Q502 Q502 Damper diode Current waveform Q502 Ic Q502 Vce ...
Page 58: ...1 52 Figure 25 IC211 MC13289ASP block diagram ...
Page 63: ...1 57 Figure 30 IC212 XC3824P2 block diagram ...
Page 65: ...1 59 1 11 Wave form of main circuit voltage ...
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Page 120: ...MultiSync FP1355 User s Manual ...
Page 144: ... VSP C0464 REVISE 2 ...
Page 166: ...Fig 2 BEZEL LOGO VSP C0464 COLOR OF LETTERING Kingfisher Blue 6704 11 5 24 5 66 ...
Page 169: ...VSP C0464 Fig 5 1 PRINTING SPECIFICATION OF CARTON BOX North America ...
Page 170: ...VSP C0464 Fig 5 2 PRINTING SPECIFICATION OF CARTON BOX Europe ...
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