presentation

1. Cleverness with Magnets and Coils

2. Different types of stepper motors
Differences in Characteristics
Stepper Drive Techniques
Stepper Dynamics
Snubbing for Stepper Motors

4. S
N
S
N
N
S
S
N
S
N

11. 1 2
3 4
5 6
e
c
d

13. a b

15. V+
S
N
N
S
G nd
V+
S
S
N
N
G nd

17. V+
S
N
S
N
N
S
S
N
S
N
G nd

19. V+
A
N
S S
N
N
D
C
N
G nd
N
S
S
V+
S
S
N
S
N
B
G nd

21. V+
A
NN
NNNN
D
SSS
C G nd
V+
S
SS
B
G nd

22. Logic Coil
Sequencer Drive

25. b
a

29. 0

32. Vo lta ge
C u rre n t
t0
t0
t1
t1
tim e

35. 12V
12V
+V
+V
1.2mH DIODE 1.2mH
DIODE
27 ZENER
11.4
11.4
0/0V 2N3055 0/0V 2N3055
50 +V 50
Ext File Ext File
1.2mH
11.4
0/0V 2N3055
50
1N4749
Ext File

36. 47.6m
Diode Only
-137m
Resistor + Diode
Zener Only
-321m
Diode + Zener
No Snubber
-506m
-690m
-875m
-1.06 372u 442u 511u 580u 649u 718u
303u
Ref=Ground X=69.2uS/Div 241%