TDA4800 데이터 시트보기 (PDF) - Philips Electronics

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TDA4800

Vertical deflection circuit for monitor applications

Philips Electronics 

Philips Semiconductors

Vertical deflection circuit for monitor

applications

TEST AND APPLICATION INFORMATION

Product specification

TDA4800

handbook, full pagewidth

SYNC

CIRCUIT

OSCILLATOR

TDA4800

BLANKING

PULSE

GENERATOR

+2 V

RAMP BUFFER

GENERATOR STAGE

PRE-

AMPLIFIER

GUARD

CIRCUIT

POWER

OUTPUT STAGE

THERMAL AND

SOAR PROTECTION

VOLTAGE

STABILIZER

FLYBACK

GENERATOR

FREQUENCY

DETECTOR

1

2

3

100 nF

330 kΩ

(frequency)

100

kΩ

15 kΩ

47 nF

4

5

6

7

8

9 10 11

47 kΩ

47 kΩ

100 kΩ

100

µF

100

nF

1N4148

linearity

vertical

deflection

unit

10 kΩ

6.5 Ω

15 kΩ

10

µF 4.7 kΩ

6.5

mH

560 Ω

(0.5 W)

2200

µF

BAX18

100

nF

100

100

µF

nF

5.6

3.3 Ω

Ω

(4 W)

12

180

kΩ

(R)

562 kΩ

13

frequency

criterion

50 Hz: low

60 Hz: high

10

nF blank pulse

(C) duration:

tbl = R × C × Ln2

or

sync input

blank

output

amplitude

2.2 kΩ

100 Ω

120 Ω

0.82 Ω

(0.5 W)

1.5 kΩ

100 nF

Vamplitude

VP2 = 23 V

MHA589

1997 Mar 27

Fig.4 Test and application circuit.

9

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