Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

CA3059 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. CA3059
Description  ZERO VOLTAGE SWITCH
Download  6 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo 

CA3059 Datasheet(HTML) 5 Page - ON Semiconductor

   
Zoom Inzoom in Zoom Outzoom out
 5 / 6 page
background image
CA3059
http://onsemi.com
5
NOTE: Current sources are established by an internal reference.
For
External
Trigger
To
Common
Fail-Safe
Input
For DC Mode
or 400 Hz
Operation
Figure 14. Circuit Schematic
-
+
2
To
Thyristor
Gate
4
5 k
7
14
12
11
30 k
150 µA
53 µA
50 k
30 k
30 k
85 k
RS
5
70 µA
10 k
1
Inhibit
Input
35 µA
10
9.6 k
9
8
50 k
Current
Boost
25
15
RP
3
NTC Sensor
13
CF
100 µF
15 V
6
Rx
AC Line
Input
APPLICATION INFORMATION
Power Supply
The CA3059 is a self–powered circuit, powered from the
AC line through an appropriate dropping resistor (see
Table A). The internal supply is designed to power the
auxiliary power circuits.
In applications where more output current from the
internal supply is required, an external power supply of
higher voltage should be used. To use an external power
supply, connect Pin 5 and Pin 7 together and apply the
synchronizing voltage to Pin 12 and the DC supply voltage
to Pin 2 as shown in Figure 4.
Operation of Protection Circuit
The protection circuit, when connected, will remove
current drive from the triac if an open or shorted sensor is
detected. This circuit is activated by connecting Pin 13 to
Pin 14 (see Figure 1).
The following conditions should be observed when the
protection circuit is utilized:
a. The internal supply should be used and the external
load current must be limited to 2 mA with a 5 k
dropping resistor.
b. Sensor Resistance (RX) and RP values should be
between 2 k
Ω and 100 kΩ.
c. The relationship 0.33 < RX/RP < 3 must be met over
the anticipated temperature range to prevent
undesired activation of the circuit. A shunt or series
resistor may have to be added.
External Inhibit Function
A priority inhibit command applied to Pin 1 will remove
current drive from the thyristor. A command of at least
+1.2 V @ 10
µA is required. A DTL or TTL logic 1 applied
to Pin 1 will activate the inhibit function.
DC Gate Current Mode
When comparator operation is desired or inductive loads
are being switched, Pins 7 and 12 should be connected. This
connection disables the zero–crossing detector to permit the
flow of gate current from the differential sensing amplifier
on demand. Care should be exercised to avoid possible
overloading of the internal power supply when operating the
device in this mode. A resistor should be inserted between
Pin 4 and the thyristor gate in order to limit the current.


Html Pages

1  2  3  4  5  6 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn