U211B ATMEL Corporation, U211B Datasheet - Page 20

• Manufacturer Part Number: U211B
• Description: as U209B + Foldback
• Manufacturer: ATMEL Corporation

Package DIP18
Dimensions in mm
The circuit is designed as a speed control based 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 about 1 mm
approximately. In this experimental circuit, the power
supply for the coupler was provided externally because of
the relatively high current consumption.
Package Information
Dimensions in mm
U211B
Package SO16
20 (21)
16
18
1
1
1.27
0.4
1.64
1.44
10.0
9.85
8.89
23.3 max
20.32
0.58
0.48
9
8
2.54
Instructions for adjusting:
D In the initial adjustment of the phase-control circuit,
D The speed can now be adjusted as desired by means of
D The switch-off power of the limiting-load control can
1.4
10
9
0.25
0.10
R
in min. position, the motor just turns.
R
be set by R
power.
0.5 min
2
31
should be adjusted so that when R
between the limits determined by R
4.8 max
technical drawings
according to DIN
specifications
3.3
technical drawings
according to DIN
specifications
9
. The lower R
6.15
5.85
5.2
4.8
3.7
3.8
0.36 max
6.4 max
7.77
7.47
9.8
8.2
9
, the higher the switch-off
0.2
Rev. A4, 03-Aug-01
14
= 0 and R
13
and R
31
14
are
.