domestic pcb manufacturer-Shenzhen Chengchi Circuit Technology Co., Ltd.

How to select the number of channels for PCB stress testers

How to choose the number of channels for a PCB stress tester?The number of channels in a PCB stress tester determines the number of strain gauges it can monitor simultaneously. Different channel counts correspond to distinct testing scenarios. Making a reasonable choice regarding the number of chann

Jan 05, 2026 1

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Low-power Ultrasonic Power Supply PCB Board

With breakthroughs in high-frequency signal processing technology, the third-generation low-power ultrasonic power supply PCB has achieved a qualitative leap in circuit optimization. Engineers adopted a four-layer blind and buried via design, implementing three-dimensional isolation between power an

Jan 04, 2026 1

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High-Precision PCB Design Essential: Exploring the Principles and Layout Essentials of Four-Wire Kelvin Connection

In PCB design, the four-wire power interface combined with Kelvin connection (also known as four-terminal connection) is a core technique for achieving high-precision power supply or current/voltage measurement. Its primary purpose is to eliminate voltage errors caused by wire resistance and contact

Jan 03, 2026 1

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Cold Solder Joint Troubleshooting: Chengchi Electronics Repair Practical Guide

In your electronics projects, have you encountered unstable connections? Cold solder joints might be the culprit. These faulty connections can lead to intermittent failures or complete circuit breakdowns. In this guide, we will walk you through identifying cold solder joints, repairing them, prevent

Dec 29, 2025 1

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Efficient Preparation Solution for PCB Samples

As the core carrier of electronic manufacturing, the internal structural quality of PCBs directly determines the reliability of end products. Metallographic sectioning inspection serves as the most rigorous "quality X-ray" in the PCB industry, unlocking the "hidden truth" of circuit boards step by s

Dec 27, 2025 1

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What are the high-frequency and high-speed PCB materials?

In the field of PCB materials, "high-frequency and high-speed laminates" are often mentioned together. However, delving into their design cores, the two have different emphases on key indicators such as common thickness, copper foil roughness, thickness tolerance, and dielectric constant (Dk) stabil

Dec 26, 2025 1