13

5.8k

Ω

V

2.5V

R

V

2.75V

H

2.25V

Line retrace

12

µs

Video

Ident.

Output

10k

Ω

BC547

1N4148

8

1k

Ω

V

R1

10

µF

V

R1

Line Sync.

V

R

V

H

Line

Flyback

Integrated

Flyback

Line

Sync.

I8

Sampling Pulse

with video

without video

Figure 8 : Video Identification Circuit (Pin 8)

22nF

Vcc1

IN4002

IN4148

SSC

Vcc1

Line

Flyback

Vcc1

12nF

Horizontal

Frequency

Vertical

Amplitude

220nF

Video

Input

22nF

pp

Video Identification

BC547

2

1

8

3

9

4

10

7

14

20

13

18

12

11

5

6

15

16

19

17

100nF

100nF

220pF

180nF

Vcc

+24V

100

µF

4.7

Ω

820k

Ω

10k

Ω

47

µF

27k

Ω

120pF

220nF

68pF

180pF

2.2nF

1.5k

Ω

560k

Ω

15k

Ω

100k

Ω

4.7k

Ω

1

µF

100k

Ω

22k

Ω

22k

Ω

2.2k

Ω

680pF

100

Ω

1000

µF

220k

Ω

220k

Ω

22k

Ω

100

Ω

1

Ω

270

Ω

100nF

2.2

Ω

IN4148

10

µF

470

µF

Frame Yoke

30 mH, 15

Ω

I

= 840mA

TDA 8214B

TYPICAL APPLICATION

TDA8214B

8/9