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NEC MultiSync 4FGe - Page 63

NEC MultiSync 4FGe
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.
5-l-4. H OUTPUT Circuit
The signal from T501 turns on and off the horizontal output transistor
Q505.
Consequently,
Q505
is turned
:
.
alternately on and off so that the SAW TOOTH current flows into the horizontal deflection yoke. The H band
signals from
IC851
input to GATE of
Q506,
Q507 and
Q508
via PWE-366A. Consequently
“S”
capacitors
(C507,
C508,
C509,
and
C510)
are rearranged by H frequency bands. The relationship of signals from
PWE-
366A,
H frequency and
“S”
capacitors is as Fig 5-l-8.
L501
and
L502
are Linearity coils. If horizontal
frequency is higher than
40.5kHz,
L501 is shorted by
RL501.
The 4FGe has several types of CRTs.
L501,
L502,
and
C506
to
C510
values are determined by the type of CRT.
I
H DY
-
L502
RL501
(Fig 5-l -7) H OUTPUT Circuit
62

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