U211B3 Temic Semiconductors (acquired by ATMEL Corporation), U211B3 Datasheet - Page 19

• 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 circuit is designed as a speed control on the
reflection-coupled principle with 4 periods per revolution
and a max. speed of 30.000 rpm. The separation of the
coupler from the rotating aperture should be 1 mm
approximately. In this experimental circuit, the power
supply for the coupler was provided externally because of
the relatively high current consumption.
Dimensions in mm
Package: DIP18 – U211B2
Package: SO16 – U211B3
Instructions for adjusting:
D
D
D
In the initial adjustment of the phase-control circuit,
R
in min. position, the motor just turns.
The speed can now be adjusted as desired by means of
R
The switch-off power of the limit load control can be
set by R
power.
2
31
should be adjusted so that when R
between the limits determined by R
94 8877
9
. The lower R
94 8875
U211B2/ B3
9
, the higher the switch-off
14
= 0 and R
13
and R
19 (20)
31
14
.
are