行业组件数据 · 2026

分压器

A voltage divider is a passive linear circuit that produces an output voltage that is a fraction of its input voltage.

技术定义与适配语境
典型 分压器 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 is a fundamental electrical circuit consisting of two or more resistors connected in series, designed to reduce a higher input voltage to a lower output voltage by dividing it proportionally according to the resistor values. It is commonly used in voltage sensing circuits to provide a scaled-down voltage signal for measurement, monitoring, or control purposes in industrial equipment.

组件规格

定义
A voltage divider is a fundamental electrical circuit consisting of two or more resistors connected in series, designed to reduce a higher input voltage to a lower output voltage by dividing it proportionally according to the resistor values. It is commonly used in voltage sensing circuits to provide a scaled-down voltage signal for measurement, monitoring, or control purposes in industrial equipment.
工作原理
The voltage divider operates on Ohm's Law and the principle of series resistance. When two resistors (R1 and R2) are connected in series across a voltage source (Vin), the output voltage (Vout) taken across R2 is calculated as Vout = Vin × (R2 / (R1 + R2)). This creates a fixed ratio output voltage that is proportional to the input voltage, enabling safe measurement of high voltages with low-voltage sensing devices.
材料
Resistors: Typically made of carbon filmmetal filmor wirewound materialsPCB: FR-4 glass epoxyConnectors: Brass or phosphor bronze with tin or gold platingHousing: ABS plastic or aluminum for protection.
Accuracy
±0.5% to ±1%
Power Rating
0.25W to 2W per resistor
Isolation Voltage
Up to 3000V RMS
Input Voltage Range
0-1000V DC/AC
Output Voltage Ratio
100:1, 1000:1 (configurable)
Operating Temperature
-40°C to +85°C
Temperature Coefficient
±50 ppm/°C to ±100 ppm/°C
标准
ISO 9001IEC 61010-1UL 61010-1DIN EN 61326

行业分类与别名

分压器 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 or aging->Inaccurate voltage measurement leading to system malfunction->Use precision resistors with low temperature coefficients; implement regular calibration
Overvoltage condition exceeding component ratings->Component failure and potential circuit damage->Incorporate overvoltage protection devices; use resistors with adequate voltage ratings
Poor connection or solder joint->Intermittent or complete loss of signal->Implement proper soldering techniques; use vibration-resistant connectors

工业生态与工程逻辑

0
Overheating due to excessive power dissipation
1
Accuracy drift from temperature variations
2
Electrical shock hazard if insulation fails
3
Measurement errors from loading effects

合规与检测

tolerance
Resistor tolerance typically ±0.1% to ±1% for precision applications
test method
Voltage ratio verification using calibrated multimeters; insulation resistance testing; temperature cycling tests

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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 in industrial applications?

The main purpose is to safely reduce high voltages to measurable levels for monitoring, protection, and control systems in industrial equipment.

How do I select resistors for a voltage divider circuit?

Select resistors based on required voltage ratio, power rating, accuracy, temperature stability, and environmental conditions. Use precision resistors for high-accuracy applications.

Can voltage dividers be used for AC voltage measurement?

Yes, but they must be designed with proper frequency response and safety considerations. Capacitive dividers are often used for high-frequency AC applications.

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