How to Choose a LAN Transformer (Part 1): Understanding Its Internal Structure
Understand differential pairs, pairsets and ports, then select a VOOHU LAN Transformer by data rate, port count and PoE current rating.
TECHNICAL ARTICLES
Selection Guides
How to choose by specs and application
Selection Guides
37 articles
PoE Ethernet Port Design: Six Questions Engineers Ask Most
VOOHU explains six common PoE design questions, from LAN Transformer DC bias and IEEE 802.3af/at/bt current ratings to 90 W component selection and the PD-side
VOOHU Electronics--RJ45 illuminated interface LED lamp position, polarity, VF/IF and PHY driver verification method
When a customer used the VOOHU SYT561188AB1A3DY1027 RJ45 with light for design, they encountered a strange problem: the network port could be connected, but the
Current Transformer Selection in Practice: Can a 40A-Rated Model Really Measure 50A Peak Current?
Two days ago, an engineer doing power supply testing contacted us through the VOOHU official website. He is designing a 90kHz continuous sinusoidal current dete
【FAQ】Three FAQs for integrated RJ45 (Mag-Jack) application
The integrated network port (Mag-Jack) integrates the network transformer, common mode inductor, Bob Smith termination and indicator light inside the RJ45. Its
【FAQ】 Audio Isolation Transformer: Signal Goes In But Won't Come Out? – VOOHU WHTT4005 Primary-Secondary Isolation Test Full Analysis
In professional audio, broadcast communications, and industrial instrumentation systems, ground loop hum, common‑mode interference, and abnormal voltage couplin
【Standard Circuit Design】Isolated SPI Solution Standard Circuit Reference
This solution is VOOHU Electronics (VOOHU)'s standard isolated SPI solution. The company has focused on the field of communication electronic components for ove
【Frequently Asked Questions】Placement of Common‑Mode Choke in Ethernet Transformers: Detailed Explanation for Non‑PoE and PoE Scenarios
In Ethernet hardware circuit design, the LAN Transformer is a core component that ensures signal transmission and provides electrical isolation. The isolation t
【Solution Application Areas】RS485 in Industrial Communication Applications – Part 1
In industrial communication systems, the selection of physical layer interfaces directly affects the signal integrity, reliability, and system cost of bus nodes
【Product Selection Guide】 Reintroducing VOOHU Electronics SFP Connectors—Far More Than Just a "Cage for Optical Modules"
In today’s rapidly advancing world of high-speed data communication and optical interconnect technology, SFP cages have become indispensable physical interfaces
【Application Solution】 RS485 Communication Circuit Design
RS-485 (EIA/TIA-485 Standard)is a balanced differential bus standard for serial communication, published by the Electronic Industries Alliance in 1983. The RS-4
【Standard Circuit Design】VOOHU Electronics — Standard Circuit Design Reference for CAN Communication
This solution is VOOHU Electronics (VOOHU)'s standard CAN communication solution. The company has focused on the field of communication electronic components fo
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