categorie: Progettazione PCB

Dove si trova la terra in un PCB?

  • On a simple PCB, it’s often done as a ground fill. The fat, thick areas are often ground.
  • On a 2-layer PCB, you may have power fills as well. You can use generalizations like this to find the ground more easily if you’re examining a PCB, but you can’t know for certain without analyzing the circuit. It’s also typical for ground to be connected at the negative end of large electrolytic capacitors. Ancora, not in every case, but it’s a place to look for it.
  • Complesso, ad alta velocità, and high-density PCBs are multi-layer. Tipicamente, at least one layer will be devoted to a ground plane. This is critical for both RF and high speed digital circuits such as PCI Express, USB, SATA, DDR DRAM, Ethernet, eccetera. Because critical signals are routed on impedance-controlled lines referenced to a ground plane. For us, we usually run microstrip lines on the top or bottom of the PCB, so there’s a ground layer right below the top and/or bottom layer.

Leggi di più: PCB multistrato

#Assemblaggio PCB

Oliver Smith

Oliver è un ingegnere elettronico esperto specializzato nella progettazione di PCB, circuiti analogici, sistemi integrati, e prototipazione. La sua profonda conoscenza spazia dall'acquisizione di schemi, codifica del firmware, simulazione, disposizione, analisi, e risoluzione dei problemi. Oliver eccelle nel portare i progetti dall'ideazione alla produzione di massa utilizzando il suo talento nella progettazione elettrica e la sua attitudine meccanica.

messaggi recenti

How to Clean a Circuit Board Safely and Effectively?

It is important to learn how to clean a circuit board properly if you’re working

5 days ago

Counterbore vs Countersink: Which to Choose for Your PCB?

When designing PCBs, selecting the appropriate type of holes for fasteners is crucial. And much

1 week ago

PCB Copper Foil: Tipi, Proprietà & Come scegliere

PCB copper foil is one of the most critical materials in the printed circuit board

2 weeks ago

MOKO Technology Launches Vietnam Manufacturing Base in February 2025

Shenzhen, Cina - febbraio 11, 2025 - Tecnologia MOKO, a leading global electronics manufacturing service

4 weeks ago

PCB Solder Mask: What It Is and Why Every Circuit Board Needs It?

While most people focus on the components and copper traces that make up PCBs, there's

2 months ago

Aluminum PCB vs FR4 PCB: Key Differences and How to Choose?

The right type of PCB material can make or break the performance of your electronics project.

2 months ago