U211B2
| Model | U211B2 |
| Description | Phase Control Circuit - General Purpose Feedback |
| PDF file | Total 20 pages (File size: 321K) |
| Chip Manufacturer | TEMIC |
U211B2/ B3
Set speed
voltage
2.2
m
F
10 V
250 k
W
R
13
47 k
W
R
31
R
7
15 k
W
100 nF
2.2
m
F / 10 V
C
10
C
5
680 pF
R
6
C
6
C
4
220 nF
C
7
1 M
W
220 nF
13
U211B2
6
2.2
m
F
10 V
4.7
m
F
10 V
14
15
C
9
4
5
16
R
9
470 k
W
3
17
10 k
W
R
14
2
GND
–V
S
R
2
1 M
W
R
12
220 k
W
2.2
m
F
18 k
W
1.5 W
470 k
W
R
3
C
11
T2
R
4
180
18
1
W
C
2
2.2 nF C /t
12
C
8
C
3
7
R
ö
ö
47 k
W
1N4004
D1
R
1
T1
R
15
BZX55
47 k
W
R
16
C
1
22
m
F
25 V
N
R
8
= 3 x 11 m
W
1W
95 10364
R
10
2.2 k
W
M
Figure 23. Speed control, automatic retriggering, load switch-off, soft start
The switch-off level at maximum load shows in principle
the same speed dependency as the original version (see
figure 2), but when reaching the maximum load, the
motor is switched off completely.
This function is effected by the thyristor (formed by T
1
and T
2)
which ignites when the voltage at Pin 15 reaches
typ. 7.4 V (Reference point Pin 16). The circuit is thereby
switched into the “stand-by” over the release Pin 18.
14 (20)
230 V~
L
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
Speed sensor
10
9
100 k
W
R
11
11
8
R
5
1 k
W
