U208B

TELEFUNKEN Semiconductors

Rev. A1, 28-May-96

5 (7)

0

0.2

0.4

0.6

0.8

0

80

120

160

200

240

1.0

95 10302

10nF

4.7nF

Phase Control

Reference Point Pin 2

2.2nF

ö

Figure 4.

03

6

9

12

0

1

2

3

4

6

15

95 10317

Mains Supply

5

Figure 5.

Design Calculations for Mains Supply

The following equations can be used for evaluating the

R

1max

+ 0.85

V

R

1min

+

V

2I

Smax

P(

+

(V

2

2R

1

where:

= Current requirement of the IC in mA

= Average current requirement of the triggering

pulses

= Current requirement of other peripheral

components

010

20

30

40

95 10316

Mains Supply

0

1

2

3

4

6

5

Figure 6.

0

200

400

600

800

0

20

40

60

80

100

1000

95 10313

Pulse Output

1.4V

Figure 7.

04

8

12

0

10

20

30

40

50

16

95 10315

Mains Supply

Figure 8.