Parts list: Equatorial Platform Stepper Motor Driver printed
circuit board.
C1
10 MF 25 vdc tantalum
C2
,C4-C6,C11
0.1 MF 25vdc ceramic
C3
0.1 MF polycarbonate, metallized polyester/polypropylene or
other temperature-stable type
C7-C10
470 pF ceramic
CR1-CR4
N914/1N4148 or similar hi-speed switching rectifier diode
CR5
1N4001 or similar power rectifier diode
LED1
Red/Green bi-color two lead. (See note 2 with schematic)
ZD1
1N5223B 5.6 volt 500mw zener diode(See note 3 with schematic)
LSW1-LSW2
Micro-switch (common in normally closed position)
Q1-Q4
IRF 510 thru 520 series N-channel power mosfet
U1
CD4013B dual JK flip flop
U2
CD4070B quad exclusive OR gate
U3
CD4066B quad switch
U4-U5
TL084 quad JFET op amp
5 ea. 14 pin IC sockets Machine pin collet socket
recommended
All resistors are 1/8 watt but you can use 1/4 watt if you have
them. Board is designed to accommodate that size resistor.
R1,R9-12,R16-R17 22
Kohm
R19,R21,R23,R25
22 Kohm
R27,R29,R31,R33
22 Kohm
R2,R7,R13-R15
10 Kohm
R18,R20,R22,R24
10 Kohm
R26,R28,R30,R32
10 Kohm
R3-R4
2.2 Kohm
R5-R6
20 Kohm trim pot. Board design to accommodate several
different
foot prints.
R8
Actual value will be dependent on your design and location to
hit
the desired rate of rotation. (See note 1 with schematic)
JP1
.1 inch (2.54mm) post shunt
J1/P1
2 pin male PCB connector or header and female wire connector.
J2/P2
3 pin male PCB connector or header and female wire connector
J3/P3
6 pin male PCB connector or header and female wire connector
J4/P4
2 pin male PCB connector or header and female wire connector
J5/P5
8 pin Mini DIN male panel mount connector and female wire
conn
Par
Jack
2 lead panel mount power jack and female wire connector as
found on wall wart AC outlet plug-in transformers.
SW1
panel mount SPST switch
F1
5x200mm fuse. (see note 5 with schematic)
Fuse
holder
panel mount fuse holder such as RadioShack 270-362
Enclosure
PACTEC LH55-130 plastic enclosure. www.pactecenclosures.com