Where Is Ground?

摘要：出于安全原因，我们保持我们的电路引用到我们的环境。在大多数情况下，这是大地。本应用笔记介绍了如何正确理解释放的本地电路接地作为参考点我们的思维去考虑其他的简单电路。

Maxim > App Notes > AUDIO CIRCUITS CIRCUIT PROTECTION GENERAL ENGINEERING TOPICS
SIGNAL GENERATION CIRCUITS TEMPERATURE SENSORS and THERMAL MANAGEMENT

Keywords: Initial accuracy, digital pots, potentiometer, resistance, voltage dividers, ratiometric, ratio steps, Sep 25, 2008
LSB, taps error, reference decoupling, Earth Ground, high push-button interface, common space shuttle, local
potential

APPLICATION NOTE 4292
Where Is Ground?
By: Bill Laumeister
Abstract: For safety reasons we keep our circuits referenced to our surroundings. In most cases this is earth
ground. This application note explains how a proper understanding of local circuit ground as a reference point
frees our thinking to consider other simple circuits.




Where is ground in space?

Usually engineering is strictly co