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https://cdn2.flux.ai/flux-comment-files/files/commentFileId-d3ab4090e45ebd49b0fa...

Schematic updates:
  1. A 4-LED gain reduction meter
  2. No sidechain
  3. Increased attack potentiometer by x2
1y
Image

Image

https://cdn2.flux.ai/flux-comment-files/files/commentFileId-d3ab4090e45ebd49b0fa7e3a04cba4c9629d2b0dd988abed397598299cbe2b15.png?GoogleAccessId=graviton-mvp%40appspot.gserviceaccount.com&Expires=4877101841&Signature=Zfq5RpwXlUtnYvCxMbFQrfbTcveO%2FwrAermkUo7JcIfKv2sqeO6v1OoHLl3NngG%2Frum%2B%2FNX72BRiwncroA1NKITeINP2zsq8YpQusUyoMyBv4laXIF11GSXgR5AMzarECAQ2xiyneTMWRP5hWGI3aVqYxPM6B4Msz3iXfn0Ii2iHrwkFnjhpyQoFKcAf6BSh8nxDWskTowepe9YES%2FVtJF20tJhTNGvU3qluw7W9w3HHkgCxzQCEBA%2F4LzLYkfWWkh05uSQUPopoFX00ZJBherBB%2F%2BRMznyGNfrYrCoRN6HB45RyNNyeEfk%2Frf1OKtd99488hXaYpbq0tIBWjOn0vQ%3D%3D
Circuit Schematic
1y
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1
R3
Resistance
100kΩ
R4
Resistance
10kΩ
R35
Resistance
10kΩ
R2
Resistance
100kΩ
R29
Resistance
4.7kΩ
R27
Resistance
33kΩ
R15
Resistance
10kΩ
R11
Resistance
470kΩ
R28
Resistance
4.7kΩ
R25
Resistance
33kΩ
R18
Resistance
100kΩ
R13
Resistance
100kΩ
R9
Resistance
100kΩ
R5
Resistance
100kΩ
R17
Resistance
100kΩ
R34
Resistance
10kΩ
R19
Resistance
10kΩ
R16
Resistance
100 Ω
R7
Resistance
100kΩ
R20
Resistance
47kΩ
R24
Resistance
220kΩ
R21
Resistance
33kΩ
R8
Resistance
100kΩ
R23
Resistance
33kΩ
R32
Resistance
100kΩ
R33
Resistance
20kΩ
R12
Resistance
470kΩ
R14
Generic Resistor
Resistance
10kΩ
R30
Resistance
4.7kΩ
R1
Resistance
100kΩ
R26
Resistance
330kΩ
R10
Resistance
10kΩ
R37
Resistance
50 Ω
R31
Resistance
4.7kΩ
R36
Resistance
50 Ω
R6
Resistance
2kΩ
R22
Resistance
120kΩ
Comparator to Control Voltage
12V
Buffer to VCA–
D19
12V
D10
12V
C2
Capacitance
1.5uF
Threshold
Resistance
10kΩ
Diode-string Output
Release
VCA Output Correction
Q5
Output Gain
Resistance
100kΩ
D11
Release
Resistance
1MΩ
VCA Output Correction
D1
Comparator to Control Voltage
D6
C1
Capacitance
680pF
12V
D8
Attack
Resistance
1MΩ
Diode-string Output
Q7
D9
C5
Capacitance
1.5uF
Control Voltage to VCA+
D2
Control Voltage to VCA+
D16
D17
D21
D5
C3
Capacitance
220uF
-12V
C6
Capacitance
10uF
Control Voltage to Buffer
C4
Capacitance
1.5uF
D3
Gain Reduction Meter
VCA Output Correction
Q8
Release
Input Gain
Resistance
20kΩ
D18
Ratio
Resistance
100kΩ
Buffer to VCA–
-12V
C7
Capacitance
220pF
Q6
-12V
D4
-12V
D20
Attack Mode Switch
C8
Capacitance
100µF
1 Buffer || 2 VCA
1 Comparator || 2 Control Voltage
Inverter
J2
J1
D12
End of Life
12V
1 Peak Detector || 2 Full-wave Rectifier || 3 VCA Output Correction || 4 Make-up Gain
End of Life
L1
Inductance
68uH


  • Ground
    A common return path for electric current. Commonly known as ground.
  • Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
  • Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
  • Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
  • Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
  • Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
  • RMCF0805JT47K0
    General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
  • 875105359001
    10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
  • CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
VCA Audio Compressor thumbnail
This is a diode-based VCA audio compressor that works in mono.
The compressor has LED-based gain reduction metering, input gain (preamp), output gain, and a fast-attack switch akin to the SSL channel-strip compressors.
The module is to be powered by a regular outlet so it has an AC-DC converter.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$96.72–$145.71

Digi-Key

$135.62–$168.63

LCSC

$30.77–$98.86

Mouser

$130.17–$146.13

Verical

$116.42–$147.14

Controls