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Connected Air Purifier Power and Control PCBA Set
An FCC-photo reference showing a discrete offline power board with transformer, high-voltage capacitor, feedback isolation and heatsinking, plus a separate MCU and radio control board.
Project context
A representative engineering program
An FCC-photo reference showing a discrete offline power board with transformer, high-voltage capacitor, feedback isolation and heatsinking, plus a separate MCU and radio control board.
System architecture
How the electronics are organized
A typical architecture isolates mains conversion on the power board, supplies the fan and low-voltage electronics, and lets the control board filter external air-quality data, command fan speed, read tachometer feedback, operate the local UI, and manage wireless functions.
Engineering risks to close
What must be resolved before release
- Control fan-start and switching noise without degrading particulate sensing or radio performance.
- Maintain isolation, high-voltage capacitor life, and thermal margin during blocked-airflow and dusty operation.
- Convert noisy, warming-up sensor data into stable automatic control with useful fault degradation.
Validation plan
Evidence expected before production
- Test input range, startup surge, fan stall, blocked airflow, output ripple, full-load temperature, and dust aging.
- Perform applicable dielectric, single-fault, surge, EFT, ESD, conducted-emission, and radiated-emission tests.
- Evaluate sensor warm-up, particulate steps, low-level drift, fan feedback, acoustic behavior, weak networks, and update power loss.
Decision-ready evidence packet
What a comparable RFQ should define
This checklist turns the technical story into reviewable inputs and release records. It describes what buyers and manufacturers should agree—not a claim that every listed record applies to every build.
Design baseline
Released schematic or block diagram, interface table, power states, critical constraints, and revision owner.
Manufacturing release
Gerber or ODB++, stack-up, centroid data, assembly drawings, approved DFM dispositions, and panel assumptions.
Material control
Released BOM revision, manufacturer part numbers, AVL or alternate rules, no-substitute lines, MSL handling, and exception approvals.
Validation record
Test method, acceptance criteria, sample or serial identity, measured result fields, and disposition. Example scope: Test input range, startup surge, fan stall, blocked airflow, output ripple, full-load temperature, and dust aging.
Production release
First-article status plus the agreed SPI, AOI, X-ray, ICT, FCT, programming, rework, OQA, labeling, and packing records.
Project-specific fields, retention periods, sampling rules, measured limits, and customer approvals are confirmed during RFQ and protected under the applicable confidentiality agreement.
Development and production controls
Manufacturing scope represented here
- Isolated offline power conversion.
- Fan speed and feedback control.
- Air-quality sensing and wireless UI integration.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
