ENG-06 · Energy & Power
16 A Appliance Health and Energy-Metering Smart Plug PCBA
A representative connected outlet architecture for switching high-current appliances, measuring energy use, identifying abnormal operating patterns, and reporting diagnostics to a local or cloud application.
Project context
A representative engineering program
A representative connected outlet architecture for switching high-current appliances, measuring energy use, identifying abnormal operating patterns, and reporting diagnostics to a local or cloud application.
System architecture
How the electronics are organized
Protected AC input and filtering feed a relay-switched load and auxiliary supply, while a metering front end senses voltage and current for an MCU that controls the relay, status indication, and wireless communication.
Engineering risks to close
What must be resolved before release
- Maintain creepage, clearance, relay life, and acceptable temperature at sustained high current.
- Preserve measurement accuracy across low power, nonlinear loads, startup inrush, and distorted mains.
- Coordinate surge, ESD, conducted emissions, wireless security, and safe failure behavior in a small enclosure.
Validation plan
Evidence expected before production
- Verify dielectric withstand, insulation, leakage, surge, EFT, ESD, and conducted or radiated EMC behavior.
- Calibrate voltage, current, power, energy, and power factor against representative resistive and nonlinear loads.
- Run relay endurance, contact-temperature, inrush, overload, stuck-contact, brownout, and network-loss tests.
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: Verify dielectric withstand, insulation, leakage, surge, EFT, ESD, and conducted or radiated EMC behavior.
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
- AC energy metering and calibration.
- Protected high-current relay control.
- Wireless monitoring and diagnostic logic.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
