Pramod
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Name Pramod Reddy
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1. Question text:
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Amonia Sensor
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2. Design summary:
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Fairly well written.
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Your worst case design is ok.
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Could have added a calibration step / method to calibrate at known gas conc.
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What happens if there is a problem with the sensor? The clean air level
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should fall below 2mV and that should trigger a different warning/alarm also.
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3. Block diagram
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4. Power supply design
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5. Industrial Design:
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6. KICAD Design
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Schematic:
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Circuit design is ok overall. Could have added more functionality
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PCB:
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Layout is too loose.
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Transformer need not be board mounted - too much weight.
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If all your components are SMD layout could be tighter.
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7. Pricing / BOM / Assembly
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Final prixing?
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