行业组件数据 · 2026

分压网络

A voltage divider network is a passive linear circuit that produces an output voltage that is a fraction of its input voltage, commonly used for voltage monitoring and signal conditioning in electrical systems.

技术定义与适配语境
典型 分压网络 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

A voltage divider network consists of two or more resistors connected in series across a voltage source, creating a specific voltage ratio at the junction between them. In industrial voltage monitoring circuits, it precisely scales down high voltages to safe, measurable levels compatible with monitoring devices like analog-to-digital converters, microcontrollers, or voltage meters. The network's output voltage is determined by the resistor values according to the formula Vout = Vin × (R2/(R1+R2)), where R1 and R2 are the series resistors.

组件规格

定义
A voltage divider network consists of two or more resistors connected in series across a voltage source, creating a specific voltage ratio at the junction between them. In industrial voltage monitoring circuits, it precisely scales down high voltages to safe, measurable levels compatible with monitoring devices like analog-to-digital converters, microcontrollers, or voltage meters. The network's output voltage is determined by the resistor values according to the formula Vout = Vin × (R2/(R1+R2)), where R1 and R2 are the series resistors.
工作原理
The voltage divider operates on Ohm's Law and the principle of series resistance division. When a voltage is applied across the series-connected resistors, the voltage drops proportionally across each resistor based on their resistance values. The output voltage is tapped from the junction point, providing a reduced voltage that maintains the same proportional relationship to the input voltage regardless of load conditions (when properly designed with minimal loading effects).
材料
Resistors: Typically made of carbon filmmetal filmor thick film materials with tolerance ratings from 1% to 5%. Substrate: Fiberglass epoxy (FR4) for PCB mounting. Terminals: Tin-plated copper or gold-plated contacts. Protective coating: Conformal coating or epoxy encapsulation for harsh environments.
Tolerance
±1% to ±5%
Power Rating
0.25W to 2W
Isolation Voltage
Up to 3000V RMS
Resistance Values
10kΩ to 10MΩ (typical)
Input Voltage Range
0-1000V DC/AC
Output Voltage Range
0-5V or 0-10V
Operating Temperature
-40°C to +125°C
Temperature Coefficient
±100 ppm/°C
标准
IEC 60068IPC-A-610UL 94

行业分类与别名

分压网络 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Resistor value drift due to temperature variations or aging->Inaccurate voltage reading leading to incorrect system responses->Use resistors with low temperature coefficients and periodic calibration
Overvoltage conditions exceeding resistor ratings->Resistor breakdown causing open or short circuit->Implement overvoltage protection circuits and use resistors with adequate voltage ratings
Moisture ingress in unprotected environments->Corrosion and leakage currents affecting accuracy->Apply conformal coating or use encapsulated resistor networks

工业生态与工程逻辑

0
Inaccurate voltage measurement due to resistor tolerance drift
1
Overheating from excessive power dissipation
2
Electrical shock hazard if insulation fails
3
Signal noise interference in high-impedance designs

合规与检测

tolerance
Voltage ratio accuracy within ±0.5% of nominal value across operating temperature range
test method
IEEE Std 118-1978 for resistance measurement, IPC-TM-650 for environmental testing

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采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the main purpose of a voltage divider network in industrial applications?

The primary purpose is to safely reduce high voltages to lower, measurable levels for monitoring equipment, protecting sensitive electronics while providing accurate voltage readings for control systems.

How do I select resistor values for a voltage divider network?

Choose resistors based on desired voltage ratio, input voltage range, power dissipation requirements, and impedance matching with monitoring devices. Higher resistance values reduce power consumption but may increase noise sensitivity.

Can voltage divider networks be used for AC voltage monitoring?

Yes, but they require consideration of frequency response and potential phase shifts. For AC applications, the network may include capacitors for filtering or frequency compensation.

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