3D silicon capacitors

Why is There a Significant Difference in Light Absorption Depths of Different Wavelengths in Silicon Materials for Image Sensors?

by
Why is There a Significant Difference in Light Absorption Depths of Different Wavelengths in Silicon Materials for Image Sensors?

The relationship between the light absorption depth of silicon materials in image sensors and the wavelength of light can be explained by the physical mechanisms of photon energy and material interaction, as detailed below: 1. The Wave-Particle Duality of Light: Differences in Photon Energy Light exhibits wave-particle duality, and its energy formula is: E = … Read more

Does a Large Voltage Divider Resistor Cause Inaccurate ADC Sampling?

by
Does a Large Voltage Divider Resistor Cause Inaccurate ADC Sampling?

1. Problem Description: In ADC sampling circuits, especially in low-power product battery voltage sampling circuits, larger voltage divider resistors are typically chosen. This helps to reduce the additional power consumption caused by the voltage divider circuit. However, this can lead to inaccurate voltage sampling. 2. Problem Analysis When the ADC samples a single-ended voltage, if … Read more

HSE Q&A (Issue 40: Instrument Safety)

by

【Question 1】Do SIS and DCS valves need to be set up separately? Can SIL1 and below be shared? 【Answer】1）Refer to “Design Specifications for Safety Instrumented Systems in the Petrochemical Industry” (GB/T 50770-2013): Measurement and actuators are best set up independently. When control valves are shared, it should ensure thatSIS takes priority. 2）Refer to “Acceptance Specifications … Read more

Is it Good to Connect the Circuit Board Ground Directly to the Chassis Ground? Adding a Resistor and Capacitor Might Be Better

by
Is it Good to Connect the Circuit Board Ground Directly to the Chassis Ground? Adding a Resistor and Capacitor Might Be Better

How to Connect the Chassis to the Circuit Board Ground?The chassis is made of metal, and there is a screw hole in the middle, which connects to the ground. Here, a 1M resistor is connected in parallel with a 0.1uF capacitor to connect to the circuit board ground. What are the benefits of this?1. If … Read more

10 Features That Explain Why Safety PLCs Are Safe

by
10 Features That Explain Why Safety PLCs Are Safe

1. Advanced Diagnostic Capabilities The safety of a Safety PLC primarily relies on its robust fault diagnosis capabilities. Research indicates that Safety PLCs must detect over 99% of potential faults, including hardware failures, software errors, and communication interruptions. For instance, Safety PLCs monitor the status of processors, memory, and input/output modules in real-time to promptly … Read more

Introduction to ARM Functional Safety Certification and Certification Toolchain

by
Introduction to ARM Functional Safety Certification and Certification Toolchain

Click the blue text above to follow us~Related to SIL Functional Safety1. Introduction The Safety Integrity Level (SIL) certification is a third-party assessment, verification, and certification process based on standards such as IEC61508, IEC61511, IEC61513, IEC13849-1, IEC62061, and IEC61800-5-2, which evaluates and confirms the safety integrity level (SIL) or performance level (PL) of safety devices. … Read more

When Chip Pins Break, No Worries: Exposing Wires Inside the Package

by
When Chip Pins Break, No Worries: Exposing Wires Inside the Package

Author: Xiaoyu, Typesetting: Xiaoyu WeChat Official Account: Chip Home (ID: chiphome-dy) 01 Exposing Wires Inside the Chip Package We received a chip, and the core part of the chip is actually not as large as the chip itself. To facilitate the connection of numerous pins, an additional layer of packaging is added outside. Common types … Read more

How to Repair Circuit Boards Without Schematics?

by
How to Repair Circuit Boards Without Schematics?

Click ↑ for automotive repair cases and follow for updates to obtain the complete timing guide Highly versatile, applicable to all circuit boards! 1. How to repair circuit boards without schematics? 1. You must have a clear mental image. You need to thoroughly understand the principles of some typical circuits and be very familiar with … Read more

Ladder Diagram Programming Techniques for PLC Safety Control Deployment Strategies

by
Ladder Diagram Programming Techniques for PLC Safety Control Deployment Strategies

Click the blue text to follow! PLC Safety Control Matters: Insights from an Experienced Electrician Last month, the automated production line in Xiao Wang’s workshop suddenly crashed, and even the safety light curtain was unresponsive, almost leading to a personal injury incident. Later, the factory manager called me to check, and I found that the … Read more

How to Place Capacitors in PCB Design?

by
How to Place Capacitors in PCB Design?

Capacitors play a crucial role in high-speed PCB design and are typically the most used components on a PCB. In PCBs, capacitors are generally categorized into filtering capacitors, decoupling capacitors, and energy storage capacitors. 1. Power Output Capacitors, Filtering Capacitors We usually refer to the capacitors in the input and output circuits of the power … Read more