1997 Oct 27 8

Philips Semiconductors Product specification
Vertical deflection power amplifier for

monitors TDA4860

APPLICATION INFORMATION

Fig.4 GUARD circuit application on vertical output.

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, full pagewidth
MEH262

TDA4860

8
VP3
VP
52.2 Ω3.3 kΩ
220 kΩ
>1 kΩ
22 µF
BC548
GUARD output
HIGH = error
2N5819
BAX13
vertical
output
signal

Fig.5 Application for flyback voltage generation by doubling the supply voltage.

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MHA592
yoke
470
µF0.1 µF
5.25 mH
C2 100 µF
470 µF
1 MΩ
150 kΩ270 Ω10 kΩ
1.8 kΩ
BAX13
−7.8 V
R1
1 Ω
1.8 kΩ
5.6 Ω
R2 240 Ω
VP2 VP3
87654321 9
PCO
RPCO
VN
VP1 V-OUT SUB FLB
DIFFERENTIAL
INPUT
AMPLIFIER
VOLTAGE
STABILIZER VERTICAL
DRIVER
from TDA4850
V-shift
+9 V
VERTICAL
OUTPUT
TDA4860 THERMAL AND
SOAR
PROTECTION
FLYBACK
GENERATOR
FLYBACK
DRIVER
PULSE
CIRCUIT