Variable Frequency Drive (VFD)

A variable-frequency drive (VFD, or adjustable-frequency drives, adjustable-speed drives, variable-speed drives, AC drives, micro drives, inverter drives, or drives) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the input electricity. Depending on its topology, it controls the associated voltage or current variation.

OH MY GOSH THAT Variable Frequency Drive (VFD) SOUNDS AMAZING THAT PWM TOP NOTCH MMM CHEFS KISS

by Munshi Man October 31, 2023

Confounding Variable

Variables that occur when the two explanatory variables , x and z, have a collective causation effect on y. The difference between the two cannot be distinguished because there is not enough evidence to determine the validity of a statistical relationship.

Weight gain is greatly influenced by activity level, but age, the confounding variable, also plays an influential role on weight gain.

by YolandaSquatbike December 8, 2021

Sampling Variability

The fact that different random samples of the same size from the same population produce different estimates.

As we study sampling variability, which do you suspect varies less: averages or individual values?

by 3d5jllppgaydunerboogers December 4, 2021

Late variables

When you commit to do something fun with your friends only to be told by your partner you have to change your plans.

Ken: are you still coming on the holiday we planned?
Dan: sorry, I’m experiencing late variables.

by Daniel O’Rourke August 1, 2025

intermittent variable rewards

On social media platforms like YouTube, this term commonly abbreviated as IVRs refer to engagement metrics, such as likes, comments and subscriptions. For creators, this type of engagement can lead to more dopamine in the brain, resulting in a rush of pleasure and validation for their work.

The way his subscriber count kept climbing was all thanks to those intermittent variable rewards; every notification felt like a little win!

by Emotional Cruiser September 22, 2025

variable algebra

a complicational variable combined with booleans getting complicated at the third level

my variable algebra is too easy!!!! Pfft!

by con"eriba February 26, 2022

Variable Value Asset

An asset whose variable value is dependent on the purpose for which it is being requested is known as a Variable Value Asset.

Donald Trumps defense in the New York fraud trial is that all valuations previously given are true, using the Variable Value Asset method of accounting.

by BobUpp November 6, 2023