PCBA Consumer Electronics Wireless Microphone Lavalier SMT Printed Circuit Board

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

• Professional Content Creation and Vlogging: The PCBA enables high-quality, hands-free audio capture for video producers, YouTubers, and interviewers, providing clear, direct voice pickup that minimizes ambient noise, essential for producing professional-grade video content.

• Broadcast Journalism and Field Reporting: Used by reporters and documentary filmmakers in dynamic environments, the PCBA ensures reliable, wireless transmission of the wearer's voice back to a camera or recorder, allowing for mobility and clear audio in unpredictable settings.

• Corporate Presentation and Public Speaking: Facilitates clear amplification for trainers, lecturers, and business presenters, freeing them to move naturally on stage or in a boardroom while their speech is transmitted wirelessly to a sound system or video conferencing software.

• Theatrical Performance and Live Events: Provides discreet, robust wireless audio for actors, musicians, and event hosts on stage. The PCBA's stable transmission and audio processing ensure consistent vocal delivery without the restriction of a handheld microphone.

• Fitness Instruction and Online Coaching: Allows fitness trainers and online coaches to deliver clear verbal instructions while demonstrating movements, with the PCBA designed to handle varied vocal dynamics and minimal movement noise from the lavalier mount.

• Distance Learning and Educational Video Production: Enables educators and instructional designers to record clear voiceovers for online courses or to be heard clearly during live virtual teaching sessions, improving audio intelligibility for students over computer speakers.

• Remote Broadcasting and Podcasting: Serves as a key component for remote guests or co-hosts, connecting to smartphones or computers via its receiver to deliver studio-quality audio directly into recording or streaming software from any location.

PCBA Features 

1. Miniature RF Transmitter Module: The core of the PCBA is a compact, low-power RF transmitter chipset (operating in UHF or 2.4 GHz ISM bands) paired with a efficient power amplifier. It encodes and wirelessly transmits the audio signal with high stability and low latency to a paired receiver.

2. High-Sensitivity Microphone Preamplifier: Incorporates an ultra-low-noise preamplifier circuit specifically designed to boost the weak signal from the tiny lavalier microphone capsule to a line level, preserving vocal detail and dynamic range while minimizing electronic hiss.

3. Advanced Digital Signal Processing (DSP): Features a DSP or audio codec that applies real-time processing, including gain control, compression (to prevent distortion from loud sounds), and high-pass filtering (to reduce wind and handling rumble), ensuring broadcast-ready audio quality.

4. Efficient Power Management and Charging Circuit: Employs a advanced Power Management IC (PMIC) to maximize operating time from a small rechargeable battery. It manages low-power sleep modes, provides stable voltage to the RF and audio sections, and integrates safe lithium-ion battery charging via USB-C.

5. Digital Encryption and Secure Pairing: Utilizes the microcontroller to manage secure digital pairing protocols (like Bluetooth pairing or proprietary UHF sync) and, in professional models, employs lightweight encryption algorithms to prevent interference and ensure private audio transmission.

6. User Interface and Status Indication: Designed with interfaces for minimalist physical controls (power, mute, gain) and drivers for multi-color LEDs or an OLED display to show battery level, transmission strength, gain setting, and mute status at a glance.

7. Robust Audio Connector and Antenna Design: The PCBA layout integrates a robust connector for the lavalier microphone cable and is designed with a carefully tuned, often printed, antenna to maintain a strong transmission link even when the transmitter is worn on the body, which can impede signal.

FAQ

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