U211B2/ B3
The circuit is designed as a speed control on the Instructions for adjusting:
reflection-coupled principle with 4 periods per revolution
In the initial adjustment of the phase-control circuit,
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.
R should be adjusted so that when R = 0 and R are
2
14
31
in min. position, the motor just turns.
The speed can now be adjusted as desired by means of
between the limits determined by R and R .
R
31
13
14
The switch-off power of the limit load control can be
set by R . The lower R , the higher the switch-off
9
9
power.
Dimensions in mm
Package: DIP18 – U211B2
94 8877
Package: SO16 – U211B3
94 8875
TELEFUNKEN Semiconductors
19 (20)
Rev. A1, 29-May-96
TEMIC [ TEMIC SEMICONDUCTORS ]
