Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

Buffer

缓冲

The buffer is a single-input device which has a gain of 1, mirroring the input at the output. It has value for impedance matching and for isolation of the input and output.

缓冲器是一个单输入设备，其增益为1，输出端镜像输入端。它在阻抗匹配和输入输出端的隔离方面具有价值。
How do you make one?
你怎么造一个？


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Making a Buffer

制作缓冲液

The basic emitter follower can be used as a buffer.

基本的射随放大器可以作为缓冲器使用

An op-amp voltage follower can serve as a buffer.

运算放大器电压跟随器可以作为缓冲器
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Inverting Buffer

反相器

The inverting buffer is a single-input device which produces the state opposite the input. If the input is high, the output is low and vice versa.

反相缓冲器是一种单输入设备，其输出状态与输入状态相反。如果输入为高电平，输出则为低电平，反之亦然。

This device is commonly referred to as just an inverter.

该设备通常被称为只是逆变器。
How do you make one?
你怎么造一个？
IC7404 hex inverter
IC7404 六进制反相器


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Making an Inverting Buffer

制作反相缓冲器

A transistor switch with collector resistor can serve as an inverting buffer.

带有集电电阻的晶体管开关可以作为反相缓冲器

An op-amp inverting amplifier with a gain of one serves as an inverting buffer.

反相放大器的运算放大器具有单位增益，用作反相缓冲器。
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IC 7404 Inverting Buffers

IC 7404 反相缓冲器

The 7404, 74H04, 74S04, 74S04A, 74LS04 share this geometry and function. There are a number of other variations on inverter chips.

7404、74H04、74S04、74S04A、74LS04 等器件具有相同的几何结构和功能。还有其他多种反相器芯片的变种。
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Inverting buffer
反相缓冲器
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