CA3059

Manufacturer Part NumberCA3059
DescriptionZERO VOLTAGE CROSSING SWITCH
ManufacturerIntersil
CA3059 datasheet
 


Specifications of CA3059

Rohs StatusRoHS non-compliant  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Page 21
22
Page 22
23
Page 23
24
Page 24
25
Page 25
26
Page 26
27
Page 27
28
Page 28
29
Page 29
30
Page 30
31
Page 27/31

Download datasheet (595Kb)Embed
PrevNext
limits the output current to approximately 3mA.
120VAC
60Hz
5K
R
X
5W
5
6
1
2
+
100 F
15VDC
-
R
14
P
13
CA3059
NTC
8
V
S
SENSOR
7
11
10
9
V
R
FIGURE 53. DIFFERENTIAL COMPARATOR USING THE
CA3059 INTEGRATED CIRCUIT ZERO-VOLTAGE
SWITCH
When the zero-voltage switch is connected in the DC mode,
the drive current for terminal 4 can be determined from a
curve of the external load current as a function of DC voltage
from terminals 2 and 7. Of course, if additional output current
is required, an external DC supply may be connected
between terminals 2 and 7, and resistor R
53) may be removed.
ON TOUCH
PLATE
1M
6
0.01 F
+6V
5
5.1
M
1M
3
OFF TOUCH
PLATE
2
0.01 F
44M
Application Note 6182
The chart below compares some of the operating
characteristics of the zero-voltage switch, when used as a
comparator, with a typical high performance commercially
available integrated circuit differential comparator.
ANY POWER
FACTOR Z
L
PARAMETERS
Sensitivity
3
Switching Speed
(Rise Time)
Output Drive
Capability
Y
4
MT
1
2
NOTE:
R
G
1K
1. Refer to Figure 20; R
1/2W
MT
12
1
G
Power One Shot Control
Figure 54 shows a circuit which triggers a triac for one com-
plete half cycle of either the positive or negative alternation
of the AC line voltage. In this circuit, triggering is initiated by
the push button PB-1, which produces triggering of the triac
near zero voltage even though the button is randomly
depressed during the AC cycle. The triac does not trigger
again until the button is released and again depressed. This
type of logic is required for the solenoid drive of electrically
operated stapling guns, impulse hammers, and the like,
where load current flow is required for only one complete
half cycle. Such logic can also be adapted to keyboard con-
soles in which contact bounce produces transmission of
erroneous information.
In the circuit of Figure 54, before the button is depressed,
both flip-flop outputs are in the “zero” state. Transistor Q
(shown in Figure
biased on by the output of flip-flop FF-1. The differential
X
comparator which is part of the zero-voltage switch is initially
44M
8
36K
-
1N914
1/2
7
CA3240
R
+
2
42K
+
1N914
1/2
1
CA3240
-
4
100 F 16VDC
FIGURE 58. ON/OFF TOUCH SWITCH
27
ZERO-VOLTAGE
TYP. INTEGRATED
SWITCH
CIRCUIT
(TYP. VALUE)
COMPARATOR (710)
30mV
2mV
>20 s
90ns
4.5V at 4mA
3.2V at 5.0mA
(Note 1)
equals 5000
X
10K
120 V
AC
60Hz
51K
R
3
12K
5
8
13
9
40W
CA3059
120 V LIGHT
10
11
MT
2
2
7
4
+6V
G MT
1
COMMON
is
G