Luc Lemmens
About the article

Dimmer with 0-10 V Control Input

for our Light Mixer Panel

Dimmer with 0-10 V Control Input
At the end of the Light Mixer Panel article published in last year’s February issue we promised to complete the project with a compatible dimmer. Sure, the DMX Dimmer published in May 2002 could be used for the purpose, but the design is rather too extensive and complex to act as a simple dimmer. The circuit presented in this article is much simpler and cheaper!The 8-channel Light Mixer Panel published in February 2002 was well received by many readers interested in sound & light equipment, mainly because it was affordable and fairly easy to integrate in existing lighting systems. However, besides praise for the design we also received many requests for an associated dimmer circuit capable of accepting the standardised 0-10 V control signals supplied by the Mixer panel outputs. Although suitable dimmers with a 0-10 V control input are available commercially, the true DIY enthusiast will, of course, insist on building one himself, in line with his efforts a building the Light Mixer Panel.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
R1,R7 = 10k?
R2 = 22k?
R3 = 3k?3
R4,R12 = 1k?
R5 = 100k?
R6,R9 = 1M?2
R8 = 5k?6
R10,R11 = 47?
C1 = 1000µF 25V radial
C2,C3,C5,C7 = 100nF
C4 = 10µF 25V radial
C6 = 100nF 250VAC Class X2
L1 = 10A triac suppressor coil, 50-100µH
D1,D2 = 1N4148
D3-D6 = 1N4001
T1,T2 = BC547
IC1 = 7815
IC2 = CA3140E
IC3 = S201S01 or S202S11
IC4 = TLC271CP
K1,K2,K5,K6 = 2-way PCB terminal block, lead pitch 7.5mm
K3 = 16-way pinheader
K4 = 9-way sub-D connector, male, PCB mount, angled pins
TR1 = 15V 1VA5 e.g., Hahn type BV EI 303 2033
F1 = 1.25 A, slow, with PCB mount holder
PCBs, order code 010125-1 (control module), 010125-2 (dimmer module),
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