PCBA Consumer Electronics Fetal Doppler Circuit Board Assembly Manufacturing

PCBA Images

About TECircuit

Found: TECircuit has been operating since 2004.

Location: An electronics manufacturing service(EMS) provider located in Shenzhen China.

Item: Customizable EMS PCB, offers a full range of one-stop shop services.

Service: Printed Circuit Board (PCB)and Printed Circuit Board Assembly(PCBA), Flexible Printed Circuit Board(FPC), Components Sourcing, Box-Building, Testing.

Quality Assurance: UL,ISO 9001, ISO 14001, ISO 13485, ITAF 16949 andcomplied with ROHS and REACH.

Factory Pictures:
Company's own plant : 50,000 sqm; Employees : 930+; Monthly production capacity : 100,000 m2

PCBA Applications

• Prenatal Heart Rate Monitoring: Detects fetal heartbeat in clinics or at home.

• Home Pregnancy Check: Allows expectant mothers to listen between visits.

• Obstetric Screening: Assists clinicians during routine exams.

• Multiple Pregnancy Detection: Helps locate separate fetal heartbeats.

• Emergency Triage: Provides quick check in remote or rural settings.

• Veterinary Use: Monitors fetal heart rates in animals.

• Telemedicine Support: Sends audio/data for remote review.

PCBA Features

1. Ultrasound Transducer Driver: Excites probe with pulsed signals.

2. Low-Noise Preamplifier: Amplifies weak Doppler echoes.

3. Doppler Signal Processor: Extracts heart rate from frequency shift.

4. FHR Algorithm: Calculates beats per minute accurately.

5. Audio Output Driver: Plays heartbeat through speaker or headphones.

6. LCD/OLED Display: Shows heart rate and waveform.

7. Bluetooth/Wi-Fi Module: Syncs to apps for recording and sharing.

8. Rechargeable Battery: Supports portable USB‑charged operation.

9. Safety Power Limiter: Caps acoustic output for fetal safety.

10. Microcontroller (MCU) : Manages modes, alarms, and user interface.

11. Noise Filtering: Reduces maternal and environmental interference.

12. Probe Detection: Auto‑senses connected transducer.

FAQ

​PCB & PCBA Description​