TABLE 1

OUTPUT DURATION TIMER AS A FUNCTION OF TIMER

CONTROL INPUT VOLTAGE

(f = Frequency at AC input)

TABLE 2

DEAD TIME DURATION AS A FUNCTION OF THE

STATE OF DEAD TIME SELECT INPUT

(f = Frequency at AC input)

6505-012703-3

+

-

AMP

+

-

AMP

+

-

COMP

+

-

COMP

3

2

1

13

15

16

DIFF AMP 2

OUTPUT

DIFF AMP 2

INPUT (-)

DIFF AMP 1

OUTPUT

DIFF AMP 1

INPUT (-)

DIFF AMP 1

INPUT (+)

11

10

12

A/D

CONVERTER

OUTPUT

DURATION

TIMER

DIGITAL

FILTER

CONTROL

LOGIC

DEAD

TIME

TIMER

1 SECOND

PULSE GEN

+

V

OUTPUT

BUFFER

ZERO CROSS-OVER

DETECT

8

6

9

7

5

TIMER

CONTROL

INPUT

OPERATION SELECT

INPUT

PULSE MODE

SELECT INPUT

DEAD TIME

SELECT INPUT

LED OUTPUT

TRIAC OUTPUT

AC INPUT

FIGURE 2. LS6505 BLOCK DIAGRAM

PULSE

SELECT

LOGIC

WINDOW

COMPARATOR

(+V)

(-V)

14

WARNING OUTPUT

4

MODE SELECT INPUT

0

18

15

sec

36

30

sec

54

45

sec

72

60

sec

2.4

2

min

3.6

3

min

4.8

4

min

6

5

min

7.2

6

min

8.4

7

min

9.6

8

min

10.8

9

min

12

10

min

14.4

12

min

16.8

14

min

18

15

min

INPUT VOLTAGE

f = 50Hz

f = 60Hz

UNIT

0

0

0

sec

OPEN

1.2

1

sec

1

2.4

2

sec

INPUT STATE

f = 50Hz

f = 60Hz

UNIT

The information included herein is believed to be

accurate and reliable. However, LSI Computer Systems,

Inc. assumes no responsibilities for inaccuracies, nor for

any infringements of patent rights of others which may

result from its use.