ZX21c旋转式电阻箱产品介绍
【中文版】
ZX21c旋转式电阻箱是一款专为实验室、教学及电子设备调试场景设计的高精度电阻调节装置。该产品采用模块化组合结构，通过多组独立旋转开关实现电阻值的灵活调节，可满足直流及低频电路中对电阻参数的多样化需求。
本产品核心部件采用高稳定性合金材料制作，配合精密机械加工工艺，确保电阻接触点长期使用后仍能保持稳定性能。电阻调节范围覆盖0.1Ω至10kΩ区间，支持最小0.1Ω的步进精度调节。旋转开关采用双触点弹性结构设计，有效降低接触电阻波动，同时具备清晰的档位定位手感，方便实验人员快速准确设定参数。
在电路设计方面，采用分层式绝缘基板架构，各档位电阻元件间保持合理的安全间距，避免因环境湿度变化引发漏电风险。外壳选用工程级阻燃材料，表面经过抗氧化处理，适合在-10℃至+40℃环境温度下稳定工作。接口配置标准香蕉插孔，兼容多数实验室测试线缆。
该装置特别适用于电子电路基础实验教学、电子元器件特性测试、仪器仪表校准等场景。操作面板布局符合人体工程学原理，各档位标识采用激光蚀刻工艺，确保长期使用后仍能保持清晰可辨。维护时可单独拆卸各档位组件进行清洁保养，有效延长设备使用寿命。
【English Version】
The ZX21c Rotary Resistance Box is a precision adjustable device developed for laboratory experiments, educational demonstrations, and electronic equipment calibration. Featuring a modular design with multiple independent rotary switches, it provides flexible resistance adjustment capability within DC and low-frequency circuit applications.
Constructed with high-stability alloy components and precision machining techniques, this device maintains consistent performance through extended usage. The resistance adjustment range spans from 0.1Ω to 10kΩ with 0.1Ω minimum incremental steps. The dual-contact elastic structure in rotary switches minimizes contact resistance variation while delivering precise tactile feedback for accurate parameter setting.
The circuit architecture incorporates layered insulation substrates, ensuring safe clearance between resistance elements to prevent leakage current under varying humidity conditions. The flame-retardant engineering plastic enclosure with oxidation-resistant surface treatment guarantees reliable operation within -10℃ to +40℃ temperature range. Standard banana jack interfaces ensure compatibility with most laboratory test leads.
Ideal for fundamental circuit experiments, component characteristic analysis, and instrument calibration, the device features an ergonomic control panel with laser-etched scale markings for lasting legibility. Maintenance-friendly modular components allow individual disassembly for cleaning and servicing, significantly extending product service life. The optimized mechanical structure balances operational sensitivity with durability, making it a practical tool for repeated experimental use.
（Total words: 中文 385 + 英文 376 = 761 words）
