WHITEPAPER: The Essentials of Single-ended and Differential Voltage Measurement (Part 1 of 2)

Learn How to Choose Which Method to Apply

Part One

Acromag manufactures circuits that amplify, isolate, filter, and convert one signal form to another (signal conditioning). This is essentially what we do, but more simply stated, Acromag manufactures circuits that measure voltage, because that is exactly what we do most of the time.

For example, you might have looked to Acromag for transmitters to measure temperature, resistance, current, or strain, but at the core of each of these measurements, the circuit will measure voltage.

Voltage is defined as a difference in electric potential between two points and is a measure of the potential for current flow in a conductor or circuit. You can measure voltage two ways: single-ended or differentially.

Depending on your application, the integrity of your measurement system can depend greatly on which approach you choose.

This paper looks at important aspects of single-ended and differential voltage measurement, and offers some insight on why it might be better to choose one method over the other?

It will also dispel some of the myths and misconceptions of voltage measurement and show how to correctly apply earth ground to these connections.