led color organ - mit...lm7812 array with big heatsinks band pass filter array amplification 12v...
TRANSCRIPT
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LED Color OrganMark Vrablic
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What is a Color Organ?
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What is a Color Organ?
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What is a Color Organ?
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Modern day Color Organ
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Why do I want to make one?
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Block Diagram
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Band-pass filtering,rectification, and smoothing
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Why use a ramp?
Band Voltage
Ramp
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Generating a ramp
Ramp Output
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How to build a 15PDT switch
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How to build a 15PDT switch
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Crude power supplyProblem:
•Need to source peak 12V@0-10A
Solution:
•Rectify Two 18V Transformers
•Use 5 LM7812s with big heatsinks
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TimelineWeek of Lab Goal PCB Goal
4/1 Proposal and initial design
4/8 Combine Audio, Band pass filters (1 channel)
Initial schematic
4/15 Ramp Generator, comparator, order parts
Finalize schematic, begin layout
4/22 Build power supply Finish layout and submit for manufacture
4/29 Debug Build PCB
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Questions?