Sch BOM
R1
10K
R2
1M
R3
1M
R4
10K
R5
5K1
R6
330R
R7
330R
R8
4K7
R9
4K7
R10
4K7
R11
330R
R12
330R
R13
4K7
R14
4K7
R15
1K
R16
100K
R17
20K
(47K)
R18
20K
R19
20K
R20
10K
R21
10K
R22
4M7
R23
330R
R24
4M7
R25
47R
R26
7K9
R27
4K7
R28
47K
R29
47K
R30
47R
R31
2K2 (CLR)
C1
22n
C2
220n
C3
1u elec
C4
22n
C5
22n
C6
1u elec
C7
68n
C8
8n2
C9
100n
C10
2u2 elec
(1u)
C11
100u elec
C12
100n
Values in blue are
improvements on the
original and are supplied
with the kit.
D4 should be reversed or
you can just leave it out.
D1-3
1N4148
D4-5
1N4001
IC1
LM13700
IC2
LM324
IC3
78L05
Q1
2N5457
Q2-3
BC550
DECAY
1MC
RES
50KB
SENS
100KB
BIAS
50KB
