Hongyi Engineering Team

Application engineers at Yiyang Hongyi Electronics with 10+ years designing aluminum housed, wirewound and cement resistors for industrial drives, energy storage, EV charging and rail-traction systems.

Articles by Hongyi Engineering Team

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  Selection guideHigh power11 min read

  How to Choose a High-Power Braking Resistor — A 2026 Engineer's Guide

  Five common sizing mistakes, the formulas you actually need (with worked example), and how to read derating curves correctly.

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  ComparisonSelection guide9 min read

  Aluminum Housed vs Cement vs Wirewound Resistors — Complete Comparison

  Which family fits your application? A 12-parameter table, decision flowchart, and three real-world case studies.

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  ReliabilityFailure analysis13 min read

  Resistor Failure Modes and Reliability — An Engineer's Guide

  Five failure modes, the physics behind each, how to detect them in test, and design rules that yield 100k-hour MTBF in real industrial environments.

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  Selection guideEV12 min read

  Pre-charge Resistor Design for EV Battery & Energy Storage Systems

  Why a 5W cement resistor can absorb 100J pulses, how to size for 800V SiC inverters, and the four failure modes that kill pre-charge resistors in the field.

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  Selection guideSnubber13 min read

  Snubber Resistor Selection Guide for SMPS, IGBT Drives & Power Electronics

  Why standard wirewound resistors INCREASE ringing, the seven-step RC design with a 1200 V / 100 A IGBT example, and the five mistakes that kill snubbers in the field.

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  Selection guideLoad bank12 min read

  Load Bank Sizing Guide — Generator, UPS & Battery Testing in 2026

  How to size a load bank for a 500 kW genset, a 200 kVA UPS, and an exit-sign battery string — with NFPA 110 step-loading profiles and a commissioning checklist.