WELL-17 · Wellness Electronics
Wireless TENS and EMS Pulse Massager PCBA
A representative miniature stimulation-pod architecture for rechargeable wireless sessions, defined pulse generation, attachment detection, local controls, independent energy limits, and safe output discharge.
Project context
A representative engineering program
A representative miniature stimulation-pod architecture for rechargeable wireless sessions, defined pulse generation, attachment detection, local controls, independent energy limits, and safe output discharge.
System architecture
How the electronics are organized
A single-cell battery feeds logic and an intermittent stimulation boost stage; an MCU or wireless controller operates a limited bipolar output bridge, samples current or impedance, handles keys and alerts, and removes stored energy after shutdown.
Engineering risks to close
What must be resolved before release
- Limit pulse current and energy under open, short, wet-skin, and single-component fault conditions.
- Prevent DC bias or sudden intensity changes during contact transitions and wireless commands.
- Define a safe charging interlock and protect immutable output limits from app or OTA changes.
Validation plan
Evidence expected before production
- Measure every mode and level across a matrix of equivalent loads for amplitude, pulse width, frequency, balance, monotonicity, and residual charge.
- Inject open, short, partial contact, hot-plug, boost, switch, battery, firmware, wireless-order, and charging faults.
- Run electrode-contact, USB, battery, RF, ESD, low-voltage, and maximum-load endurance without using people as production loads.
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: Measure every mode and level across a matrix of equivalent loads for amplitude, pulse width, frequency, balance, monotonicity, and residual charge.
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
- Bipolar pulse generation and hardware energy limiting.
- Electrode-contact and load supervision.
- Wireless sessions, local keys, and charge management.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
