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參數(shù)資料
| 型號： | CA3059 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Zero-Voltage Switches for 50Hz-60Hz and 400Hz Thyristor Control Applications |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDIP14 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 79K |
| 代理商： | CA3059 |
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
μ
A
53
μ
A
50 k
30 k
30 k
85 k
R
S
5
70
μ
A
10 k
1
Inhibit
Input
35
μ
A
10
9.6 k
9
8
50 k
Current
Boost
25
15
R
P
3
NTC Sensor
13
C
F
100
μ
F
15 V
6
R
x
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 (R
X
) and R
P
values should be
between 2 k
and 100 k
.
c. The relationship 0.33 < R
X
/R
P
< 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
μ
A 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.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CA3059 DIE | 制造商:Harris Corporation 功能描述: |
| CA3059/D | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Zero Voltage Switches |
| CA3059_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Zero Voltage Switch |
| CA3059E | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| CA3060 | 制造商:HARRIS 制造商全稱:HARRIS 功能描述:110kHz, Operational Transconductance Amplifier Array |
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