CA3059 Intersil, CA3059 Datasheet - Page 7

• Manufacturer Part Number: CA3059
• Description: ZERO VOLTAGE CROSSING SWITCH
• Manufacturer: Intersil

Specifications of CA3059

• Rohs Status: RoHS non-compliant

120V
FIGURE 12. CA3059 ON/OFF CONTROLLER WITH CON-
60Hz
AC
100 F
SENSOR
REFERENCE
REFERENCE
SET
TEMP
R
NTC
THERM-
ISTOR
SIGNAL
P
“HIGH”
“LOW”
INPUT
(HR)
(LR)
7
8
1
68K
1/2 W
7
10K
10K
14
13
2
8
50K
5W
TYPE
2N6975
10K
0.001 F
5
1
CA3059
8
1
7
DIFF.
AMPL.
DIFF.
AMPL.
9
3
MAX
FIGURE 13. SENSITIVE TEMPERATURE CONTROL
MIN
CW
39K
1/2 W
12
10
68K
1/2 W
CA3098
COMPARATOR
6
2
11
6
Q
1K , 1W
Application Note 6182
62K
1N914
5
4
1
-
4
SET
HYSTERESIS
10 F
560
1/2W
SUMMER
R
3
L
G
DELAYED
OUTPUT
MT
MT
100 F
-
2
1
+
7
For applications that require complete elimination of half
cycling without the addition of hysteresis, the circuit shown in
Figure 13 may be employed. This circuit uses a CA3098E
integrated circuit programmable comparator with a zero-
voltage switch. A block diagram of CA3098E is shown in
Figure 14. Because the CA3098E contains an integral
flip-flop, its output will be in either a “0” or “1” state.
Consequently the zero-voltage switch cannot operate in the
linear mode, and spurious half cycling operation is
prevented. When the signal input voltage at terminal 8 of the
CA3098E is equal to or less than the “low” reference voltage
(LR), current flows from the power supply through resistor R
and R
zero-voltage switch. This condition turns off the triac. The
triac remains off until the signal input voltage rises to or
exceeds the “high” reference voltage (HR), thereby effecting
a change in the state of the flip-flop so that a logic “1” is
2
10
FLIP-FLOP
(MEMORY)
3
15K
PROGRAMMABLE BIAS
CURRENT INPUT (I
R
2
11
2
2
9
CA3098E
, and a logic “0” is applied to terminal 13 of the
R
47
1
CA3059
TROLLED HYSTERESIS
13
7
DRIVER
8
5
BIAS
5K
4W
SUBSTRATE
)
4
G
6 V+
OUTPUT
LOAD
MT
MT
4 V-
2
1
120V
60Hz
CURRENT
CONTROL
OUTPUT
OUTPUT
“SINK”
5
3
1