2
Micro-cap III
Spectrum Software
STD
54
NPN
16,23,0,2,1,2,3,Q1
Resistor
16,23,3,1,2,4,R1
Resistor
16,29,3,1,0,2,R2
Resistor
19,14,1,1,4,1,R3
Resistor
19,26,1,1,3,0,R4
Capacitor
24,32,5,1,0,3,C2
Capacitor
13,23,6,1,2,5,C1
Short3
16,23,6,-1,
Short5
24,26,6,-1,
Short5
24,32,6,-1,
Capacitor
27,20,2,1,6,1,C3
NPN
37,20,0,2,7,6,8,Q2
Resistor
37,20,3,1,6,4,R5
Resistor
37,26,3,1,0,6,R6
Resistor
40,11,1,1,4,7,R7
Resistor
40,23,1,1,8,0,R8
Capacitor
45,29,5,1,0,8,C5
Capacitor
29,20,1,1,6,0,C4
Short5
45,23,6,-1,
Short5
45,29,6,-1,
Ground
29,26,7,-1,
Short2
27,20,0,-1,
Short2
19,20,0,-1,
Short6
37,20,6,-1,
Short2
29,20,0,-1,
Short3
16,29,7,-1,
Short3
16,32,0,-1,
Ground
19,32,7,-1,
Short3
37,29,0,-1,
Short3
37,26,1,-1,
Ground
40,29,7,-1,
Short6
46,17,6,-1,
Capacitor
47,17,7,1,7,0,C6
Ground
50,23,7,-1,
Diode
53,17,7,1,7,0,Z1
Short6
53,23,6,-1,
Short6
53,17,6,-1,
Short1
46,17,4,-1,
Inductor
7,29,5,1,0,5,L1
Ground
7,29,7,-1,
Battery
3,11,0,1,0,4,12 V
Short12
28,11,4,-1,
Short12
16,11,4,-1,
Short3
37,11,1,-1,
Short3
19,11,1,-1,
Short6
16,11,7,-1,
Ground
3,11,7,-1,
Capacitor
9,11,7,1,4,0,C7
Ground
9,17,7,-1,
Short6
9,11,0,-1,
Short1
15,11,4,-1,
Short1
15,11,4,-1,
Short1
15,11,4,-1,
Short2
53,17,0,-1,
0
11
15,4,-1,Magnetic stripe reader amplifier
29,6,-1,by
16,8,-1,Luis Padilla Visd¢mine (1997)
55,17,7,Output
1,37,-1,R1 = 68 k, R2 = 10 k, R3 = 22 k, R4 = 2.2 k
1,39,-1,R5 = 8.2 k, R6 = 1 k, R7 = 2.2 k, R8 = 47
1,41,-1,C1 = 22 uF, C2 = 10 uF, C3 = 47 uF, C4 = 22 nF
1,43,-1,C5 = 150 uF, C6 = 22 nF, C7 = 2200 uF (16 V)
1,47,-1,Z1 = Zener diode with breakdown voltage around 6 V
1,45,-1,L1 = Magnetic head
1,49,-1,Q1, Q2 = Any bipolar silicon NPN general purpose transistor
7








12













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5
10


















































3
0
3
0
0
5


















3




48,3,51,51
0
0
0
0
0