What is peak (pk)? - Definition from WhatIs.com
Part of the Smart grid glossary:

Also see peak-to-peak .

Peak (pk) is the maximum value, either positive (pk+) or negative (pk-), that a waveform attains. Peak values can be expressed for voltage (the usual case), current , or power .

Alternating current ( AC ) waveforms reach peaks in two directions of polarity or current flow. These peaks are usually of equal amplitude and opposite polarity. However, if a direct current ( DC ) component exists, pk+ differs from pk-. An example of an AC wave with a DC component, showing the pk+ and pk- values, is shown below.

peak.gif (1932 bytes)

For an AC sine wave without a DC component, the peak amplitude is equal to approximately 1.414 times the root-mean-square amplitude.

This was last updated in March 2011
Posted by: Margaret Rouse

Related Terms

Definitions

  • charge (electric charge)

    - In physics, charge, also known as electric charge, electrical charge, or electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has mor... (WhatIs.com)

  • sensor analytics

    - Sensor analytics is the statistical analysis of data that’s created by wired or wireless sensors. (WhatIs.com)

  • ampere hour (Ah or amp hour)

    - An ampere hour (abbreviated Ah, or sometimes amp hour) is the amount of energy charge in a battery that will allow one ampere of current to flow for one hour. (WhatIs.com)

Glossaries

  • Smart grid

    - Terms related to smart grids, including definitions about utility electricity delivery systems and words and phrases about smart meters and distributing, monitoring and billing electrical power.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question About peak (pk)Powered by ITKnowledgeExchange.com

Get answers from your peers on your most technical challenges

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.