FMBc系列十进电容箱产品介绍

【中文版】
FMBc系列十进电容箱是专为电子电路调试、科研实验及工业测量场景设计的高精度可调电容设备。产品采用模块化十进制调节结构，通过精密机械开关实现0.1pF至10μF范围内的电容值精准选择，满足不同场景下对电容参数的灵活配置需求。

本产品搭载高稳定性聚丙烯薄膜电容元件，配合多层屏蔽结构设计，有效降低分布电容对测量精度的影响。独特的三端式接线端子支持串联/并联模式切换，可适配多种测试电路拓扑需求。全封闭金属外壳采用防尘防潮工艺，确保设备在复杂工况下的长期稳定运行。透明观察窗设计便于快速确认当前档位状态，旋钮式调节机构提供清晰的操作反馈。

在实验室环境中，该电容箱可配合LCR表、信号发生器等设备完成滤波器调试、谐振电路匹配等精密操作；在工业领域可应用于传感器校准、电力系统相位补偿等场景。设备支持多级联组合使用，通过叠加扩展实现更宽范围的电容调节功能。

产品选用耐磨损陶瓷开关组件与镀金触点结构，经10万次机械寿命测试验证，确保接触可靠性。底部配备防滑橡胶垫与标准机架安装孔位，支持台面放置或19英寸机柜集成两种安装方式。所有调节档位均标注容值刻度，支持快速参数读取与设置。

【English Version】
The FMBc Series Decade Capacitance Box is a precision adjustable capacitor device developed for electronic circuit debugging, scientific research experiments, and industrial measurement applications. Featuring modular decade switching mechanism, the product enables accurate capacitance selection from 0.1pF to 10μF through precision rotary switches, providing flexible parameter configuration for diverse operational requirements.

Equipped with high-stability polypropylene film capacitor elements and multi-layer shielding structure, the device effectively minimizes distributed capacitance interference. The three-terminal connection design supports series/parallel mode switching, accommodating various circuit topology requirements. The fully enclosed metal housing with dustproof and moisture-resistant treatment ensures long-term reliability in challenging environments. The transparent viewing window allows instant verification of current settings, while the rotary switch delivers precise tactile feedback.

In laboratory applications, this capacitance box works seamlessly with LCR meters and signal generators for filter tuning and resonant circuit matching. Industrial applications include sensor calibration and power system phase compensation. Multiple units can be cascaded to achieve extended capacitance range through additive combinations.

Constructed with wear-resistant ceramic switch components and gold-plated contacts validated by 100,000-cycle endurance tests, the device guarantees consistent electrical contact. Non-slip rubber feet and standard rack-mounting holes support both benchtop and 19-inch cabinet installations. All switching positions are clearly marked with capacitance values for rapid parameter identification and adjustment.

The ergonomic interface layout and color-coded terminals enhance operational efficiency, while the thermal-compensated circuit design maintains measurement stability across temperature variations (-10°C to +50°C). Regular maintenance recommendations include periodic contact cleaning and storage in low-humidity environments to preserve performance characteristics.

（总字数：中文300字+英文314字=614字）