PCB & PCBA Blog

Introduction As a sales manager at LHD TECH, I have always believed that the essence of foreign trade is not transactions, but understanding the customer’s needs with professionalism, solving pain points with patience, and guarding trust with responsibility. I

Introduction: Why You Need a Multimeter to Test a PCB Board Every pcb board—from the simplest timer circuit to the most complex smartphone—relies on flawless interconnection and component. Yet, manufacturing errors, wear and tear, and user accident are unavoid

Introduction: PCB, AC, DC & How to Use AC in a PCB A printed circuit board (PCB) include the foundation for all electronics, power supplies, and digital systems. No matter you’re dealing with direct current (DC) in your DC circuits or alternating current (

What is an Attenuator? An attenuator is a specialize electronic device that reduces the power or amplitude of a signal without appreciably distorting its waveform, make it one of the most important component in any electronic circuit involved in audio, RF, and

Introduction: The Importance of Headers in Electronics If you want a robust, modular and reliable connection on your pcb board, choose the right PCB head is essential. The head is the core of every modular system, used to connect board or module, interface cir

Introduction: Smart Grids, PCBs, and the Modern Energy Revolution At LHD TECH, we are deeply aware of the advent of the AI era. Currently, the greatest challenge lies in the basic power infrastructure, and the rise of the global smart grid is also becoming a d