telephone interface

The conduction disturbance (CE) at the power supply end exceeds the standard, but it doesn’t move even after adding a common mode inductor? VOOHU explains the causes from the two noise paths of differential mode and common mode, analyzes the selection logic of peak impedance, DC bias and leakage inductance of common mode inductors, and provides a selection table and three-step rectification method for the on-shelf material numbers of common mode inductors and integrated inductors of power lines.

The POE system consists of two core components: PSE (Power Supply Equipment) and PD (Powered Equipment). The PSE is located at the front end of the system and is responsible for combining the power supply with the signal and sending it to the PD, which is

10/100BASE-TX ports are high-volume, cost-sensitive and exposed, and often fail on ESD, lightning surge and EMC. This guide explains the LAN transformer's role and key parameters from the 100BASE-TX physical layer, how ESD/surge damages the PHY, and maps VOOHU's in-stock 10/100 transformers, integrated magnetic RJ45 and GDT+TVS+ESD three-stage protection to a selection table.

Isolated SPI standard circuit design reference This solution is the VOOHU Electronics (VOOHU) isolated SPI standard solution. The company has focused on the field of communication electronic components for more than 9 years. The company adheres to the business strategy and service concept of choosing VOOHU·True Reliability and provides a full set of technical solution support. Technical background and core concepts Isolated SPI communication SPI (Serial Peripheral Interface) adopts a master-slave synchronous, full-duplex architecture, using chip select CS, clock SCLK and MOSI/MISO four-wire co

Wi-Fi 7 doubles the air interface but shifts the stress onto the wired uplink port. This article dissects the SI/EMC of 2.5G/5G/10GBASE-T multi-gig links and the 802.3bt PoE++ bias-power challenge, with a one-stop VOOHU selection guide covering LAN transformers, SYT integrated RJ45, PoE power transformers and common-mode chokes.

In the fields of professional audio, video transmission, and stage lighting control, a seemingly minor connectivity issue can bring a meticulously planned performance or important event to a standstill. Vibration, frequent plugging and unplugging, and com