U211B3 Temic Semiconductors (acquired by ATMEL Corporation), U211B3 Datasheet - Page 15

• Manufacturer Part Number: U211B3
• Description: Phase Control Circuit - General Purpose Feedback
• Manufacturer: Temic Semiconductors (acquired by ATMEL Corporation)

TELEFUNKEN Semiconductors
Rev. A1, 29-May-96
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
flows. This function is effected by the thyristor, formed
by T
reaches ca. 6.8 V (Reference point Pin 16). The potential
1
and T
2
which ignites as soon as the voltage at Pin 15
a
max
, adjustable with R
Figure 24. Speed control, automatic retriggering, load switch-off, soft-start
2
. Then only I
O
at Pin 15 is lifted and kept by R
operating threshold whereby the maximum load
regulation starts and adjusts the control unit constantly to
a
shows that the circuit is still in operation by a quiet
buzzing noise.
max
(I
O
), inspite of a reduced load current. The motor
U211B2/ B3
14
over the internally
15 (20)