JH. Transient Gate GATE Schematics
+vb2
C3
U1A
8
+
V+
TL072/301/TI
V-
-
4
100n
-vb2
R2
200k
C1
10u
D1
GND2
100n
C2
1
GND2
R1
20k
C4
100n
C5
100n
R3
20k
R4
20k
GND2
3
2
1N4148
D2
1N4148
+vb2
C16
U8
7
100n
V+
V-
4
-vb2
100k
R35
N1
N2
C17
100n
1
GND2
6
5
GND2
R38
330
R36
100k
R37
100k
GND2
3
+
TL071/301/TI
2
-
R95
+15V
0V
-15V
R79
100k
11
R96
11
1u
R78
100k
C33
C40
100u
C41
100u
+
100n
+
100n
R77
1k
C43
C42
U10A
3
2
+vb1
GND1
-vb1
+vb1
C51
8
100n
+
GND1
V+
V-
C50
-
4
100n
GND1GND1
-vb1
GND1
NE5532A
R_in
GND
5
+
6
-
NE5532A
+vb1
V+
V-
4
8
U10B
-vb1
L_in
GND1
R85
100k
100k
1u
R84
C36
R86
1k
GND1GND1
JH. Transient Gate
based on SPL and Drawmer Circuits
(c) this drawing J. Haible 2005
given for non-commercial, educational purpose only.
Parts of this circuit may be covered by SPL or Drawmer
patents.
Sheet 1: Voltage Controlled Transient Designer section
R5
10k
1
7
R8
20k
GND2
10u
R39
100k
C18
GND2
C49
GND2
U1B
5
+
TL072/301/TI
6
-
10u
C48
10u
GND2
C37
10u
10u
+vb2
U2A
3
+
TL072/301/TI
2
-
-vb2
+vb2
8
V+
V-
4
-vb2
GND2
C32
R76
20k
GND2
R87
47
R82
20k
GND2
C6
8
100n
GND2GND2
V+
1
V-
C7
4
100n
GND2
R7
20k
R9
10k
D4
7
1N4148
D3
1N4148
R6
10k
R
to Gate
Sidechain
0
+15V
C45
10u
0V
-15V GND2
C44
10u
-vb1
R74
5.1k
U11
1
-in
2
Ec+
3
Ec-
4
sym
Vee
GND
Vcc
out
5
6
7
8
2181B_THAT
R89
100
GND2 GND1
R88
180
-vb1
R81
5.1k
U12
1
-in
2
Ec+
3
Ec-
4
sym
Vee
GND
Vcc
out
5
6
7
8
2181B_THAT
TL082
TL082
TL082
TL082
R15
R11
20k
R10
GND2
5
6
10k
R54
10k
R55
20k
+vb2
C21
100n
5
+
V+
TL074/301/TI
V-
6
-
11
C23
100n
GND2
+vb2
+
-vb2
+
-vb2
+vb1
GND1
U13A
8
3
+
V+
+vb1
OP275
V-
2
-
4
-vb1
R80
20k
C34
22p
GND1
+vb1
+vb1
8
5
+
V+
V-
6
-
4
-vb1
R83
20k
C35
22p
+vb2
U2B
8
+
V+
TL072/301/TI
V-
-
4
-vb2
4
U6B
7
D17
1N4148
R58
100k
C52
100n
GND1
1
C53
100n
GND1
U13B
7
OP275
R12
1.5k
4.7k
D5
7
1N4148
R13
680k
R14
27k
C8
150n
GND2
D6
1N4148
R16
680k
C11
150n
GND2 GND2 -vb2
D16
1N4148
R57
390k
++
C24
2.2u
C25
2.2u
GND2 GND2 GND2 -vb2
R59
47k
C26
100n
GND2GND2
R60
20k
C29
220n
R62
20k
R63
20k
C30
220n
C31
220n
GND2 GND2
R91
C38
150
10u
R93
100k
GND1
10u
C39
R94
100k
GND1
R92
150
GND1
D7
1N4148
+vb2
U3A
3
+
V+
TL074/301/TI
V-
2
-
11
GND2 -vb2
+vb2
U3B
4
5
+
V+
TL074/301/TI
V-
6
-
11
+vb2
U6A
4
3
+
V+
TL074/301/TI
V-
2
-
11
+vb2
U7B
8
5
+
V+
TL072/301/TI
V-
6
-
4
+vb2
C28
U7A
8
+
V+
TL072/301/TI
V-
-
4
100n
-vb2
100n
C27
3
2
D20
1N4148
R90
R_out
820
GND
L_out
POT
R100
47k
GND2
100
GND2
4
7
GND2
1
GND2
1
C9
100n
GND2
1
C10
100n
GND2
7
1
+vb2
4
TL074/301/TI
-vb2
R99
82k
U10
3
+
uA741
2
-
+vb2
U4B
U3C
+
V+
TL074/301/TI
V-
9
-
11
-vb2
R26
10k
R27
10k
+vb2
4
D9
1N4148
1N4148
D10
8
D11
1N4148
R28
150k
R29
15k
C13
GND2
68n
GND2GND2
R17
POT
100k
+vb2
-vb2
R20
10k
R21
2.2Meg
R18
10k
R19
100k
1N4148
GND2
D8
U3D
12
+
TL074/301/TI
13
-
R23
20k
V+
V-
11
-vb2
4
+vb2
R22
100k
C12
22n
10
GND2
R24
10k
14
R25
390k
-vb2
A
GND2
U5D
12
+
TL074/301/TI
13
-
R65
10k
0V
GND2
S
+vb2+vb2
+vb2
14
D18
GND2
U5B
5
+
V+
TL074/301/TI
V-
6
-
11
-vb2
R53
100k
R112
22
4
GND2
D25
1N4148
R110
150
R116
680
7
R118
22
1N4148
BC560C
GND2
R109
510
D24
R49
7.5k
R50
15k
R51
1k
R46
10k
1N4148
R119
150
Q1
R48
82k
D27
R121
680
U5C
10
9
R120
510
D26
1N4148
BC560C
R111
16k
D23
1N4148
+vb2
4
+
V+
TL074/301/TI
V-
-
11
R47
10k
Q2
7
R66
10k
R71
U6D
12
+
TL074/301/TI
13
-
100k
GND2
+vb2
4
V+
V-
11
-vb2
R67
10k
R70
10k
U6C
10
+
TL074/301/TI
9
-
R68
10k
+vb2
V+
V-
11
-vb2
GND2-vb2
4
8
R72
GND2
10k
R69
10k
R73
47k
1N4148
D19
1N4148
R103
GR
U5A
3
+
V+
GND2
V-
2
-
11
R107
43k
R104
18k
R105
3.3k
GND2
62k
5
6
1
D21
LED
gree
R106
R101
300
3.3k
GND2
D22
LED
re
+vb2
V+
V-
4
-vb2
7
OS2
OS1
from Gate
Sidechain
0
U11
3
LDR1
4
LDR2
NSL32_static
U12
3
LDR1
4
LDR2
NSL32_static
LED+
LED-
LED+
LED-
1
2
-vb2
1
2
-vb2
R127R102
300
Duo LED
5
+
TL072/301/TI
6
-
-vb2
R30
10k
U4A
3
+
TL072/301/TI
2
-
-vb2
+vb2
4
V+
V-
11
-vb2-vb2
R40
10k
8
-vb2
D15
1N4148
R123
16k
D28
1N4148
+vb2
U14B
8
V+
LM358
V-
4
-vb2
V+
V-
4
V+
V-
4
100n
8
+vb2
8
C20
100n
C19
R41
10k
D14
1N4148
CSV
+
-
R31
10k
100n
100n
GND2
14
R45
10k
1
5
GND2
6
C15
C14
GND2
7
GND2
1
GND2
+vb2
8
V+
LM358
V-
-vb2
ACV
SCV
{sustain}
U14A
4
0V
R42
100
R44
100
+
-
R115
47k
R128
47k
{attack}
POT
R43
10k
3
GND2
2
R126
R32
100
POT
R34
10k
R33
100
47k
GND2
R124
100k
R114
100k
RAN
R129
47k
+vb2
+vb2
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