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DC Mixer Chiclets

$10.00 
DESCRIPTION

The DC MIxer chiclets are perfect for mounting a small mixer to banana jack when you
need to add an extra input or two to an audio/cv input! You can also wire it as a bipolar attenuator.
(Banana Jack shown in photo not included)

DETAILS

  • DIY PCB (Perfect for SMD soldering practice!) : 0.75” x 0.75”

  • Current: tbd

  • SMD parts not included

  • 5 PCB’s per Bag for $10

Quantity:
Add To Cart

The DC Mixer Chiclet is the easy solution to adding summed inputs or bipolar attenuators to your DIY Serge/Buchla/ Banana based project! The chiclet mounts to any banana jack you might have on the panel. It can use that jack as the source to monitor, or you can simply use the jack to mount the board and input an external source.

With such a low parts count, the use of SMD parts makes this a great beginner SMD soldering project. Using 0805 sized components, the DC Mixer Chiclet is a very simple project to get over the DIY SMD soldering hump!

Build of Materials: (SMT Passives = 0805)
R1-R6 = 100K (adjust R4 for input gain if you dont need UNITY)
R7 = 332R
C1-C2 = 100n 50V Ceramic
C3 = 33p Ceramic
U1 = TL072 or similar (SOIC-8)
A, B, C = non inverted inputs
D = Inverted Input
E = Output
F = Mounting Banana Jack (Isolated from DC Mixer)

LGE140 Board Layout
LGE140 Schematic