U208
| Model | U208 |
| Description | Open Loop Phase Control Circuit |
| PDF file | Total 7 pages (File size: 88K) |
| Chip Manufacturer | TEMIC |
U208B
Open Loop Phase Control Circuit
Description
The integrated circuit, U208B, is designed as a phase con-
trol circuit in bipolar technology with internal
supply-voltage monitoring. As the voltage is built up, un-
controlled output pulses are avoided by internal
monitoring. Furthermore, it has internal-current and volt-
age synchronisation. It is recommended as a low cost
open-loop control.
Features
D
Automatic retriggering
D
Triggering pulse typ. 125 mA
D
Voltage and current synchronisation
D
Internal supply voltage monitoring
D
Current requirement
≤
2.5 mA
Package:
DIP8
Block Diagram
BYT77
18 k
W
/
2W
R
3
220 k
W
/
0.5 W
7
Voltage
detector
8
Current
detector
Automatic
retriggering
Output
pulse
3
R
7
180
W
R
4
470 k
W
/
0.5 W
D
1
R
1
M
L
95 11224
TIC
236N
V
M
=
230 V ~
5
4
R
2
180 k
W
R
6
18 k
W
100 k
W
R
5
120 k
W
6
10 nF
C
2
–V
S
C
1
22
m
F/
25 V
N
Phase
control unit
ö
= f (V
6
)
2
Supply
voltage
limitation
Voltage
monitoring
1
GND
Figure 1. Block diagram for simple phase control system
TELEFUNKEN Semiconductors
Rev. A1, 28-May-96
1 (7)
