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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MEH262

TDA4860

8

VP3

VP

5

2.2

Ω

3.3 k

Ω

220 k

Ω

>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

µF

0.1

µF

5.25 mH

C2 100

µF

470

µF

1 M

Ω

150 k

Ω

270

Ω

10 k

Ω

1.8 k

Ω

BAX13

−7.8 V

R1

1

Ω

1.8 k

Ω

5.6

Ω

R2 240

Ω

VP2

VP3

8

7

6

5

4

3

2

1

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