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AVAB Modulus Digital Dimmer

AVAB Modulus Digital Dimmer
     Image courtesy of
      AVAB America

The Modulus is an "absolute RMS output" dimmer, which will supply a constant RMS voltage to the ouput load regardless of input voltage waveform distortion. It samples the incoming AC waveforms (on each of the three phases) at 22KHz, and computes the correct firing angle based on the RMS input voltage. Corrections take place on the following half cycle. Control is via a local LCD operator interface, two isolated DMX-512 links, and Ethernet.

Modulus Control Module Circuit Board
Photo: © 1999 Mark Jensen

ICD designed the hardware and printed circuit boards, and developed the user interface and communications software for the Modulus.

What can ICD do for you?

What ICD did for AVAB America:
Control Card User Interface Communications
Product Specification
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Electronic Hardware Design
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PC Board Layout
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Mechanical Design      
Embedded Systems Software Design
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Embedded Systems Software Coding
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Microsoft Windows Applications      

Hardware and Software Consulting:
Please contact Intelligent Control Devices for all of your hardware and software design needs!

Intelligent Control Devices
Telephone: (715) 682-9673
Email: Click here for our email form.

Modulus Sales and Service:
ICD does not manufacture or support the Modulus, which is a product of AVAB America. Please contact them directly for more information or help regarding their product line. Thank you.

AVAB America, Inc.
Telephone: (707) 778-8990
Website: http://www.avab.com/

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