參數(shù)資料
型號: U211B
英文描述: Phase Control Circuit - General Purpose Feedback
中文描述: 相位控制電路-通用信息反饋
文件頁數(shù): 15/20頁
文件大小: 322K
代理商: U211B
U211B2/ B3
TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
15 (20)
1
1
1
1
1
2
3
4
U
1
1
1
5
6
7
1
8
1
9
R
3
M
R
1
1
D
1
2
4
R
4
1
1
1
R
1
2
2
C
1
R
8
=
R
1
2
2
6
C
5
R
2
1
C
2
2
1
R
5
2
C
4
S
R
7
1
2
C
7
R
1
4
1
R
1
C
6
1
R
6
1
2
C
8
2
1
C
3
2
1
C
1
2
R
3
4
1
4
R
9
G
S
1
R
1
4
R
1
3
1
R
1
B
S
v
L
T
T
R
C
/
F
F
F
F
F
9
N
C
9
C
1
2
Figure 24. Speed control, automatic retriggering, load switch-off, soft-start
The maximum load regulation shows the principle in the
same speed dependency as the original version (see
figure 2). When reaching the maximum load, the control
unit is turned to
max
, adjustable with R
2
. Then only I
O
flows. This function is effected by the thyristor, formed
by T
1
and T
2
which ignites as soon as the voltage at Pin 15
reaches ca. 6.8 V (Reference point Pin 16). The potential
at Pin 15 is lifted and kept by R
14
over
the internally
operating threshold whereby the maximum load
regulation starts and adjusts the control unit constantly to
max
(I
O
),
inspite of a reduced load current. The motor
shows that the circuit is still in operation by a quiet
buzzing noise.
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