We've included this handy glossary to help with the terminology & abbreviations relating to power products. Pick a letter below to begin, or download the glossary to refer to it whenever you like.A B C D E F G H I J K L M N O P Q R S T U V W X-Z #
SI prefix multiplier. Multiplies by 10-9. So 100 nF = 100 x 10-9 F. Written as 'nano'. Abbreviated to 'n'.
Industry trade organisation “providing a forum for the standardisation of electrical equipment” with headquarters in Rosslyn, Virginia. See https://www.nema.org/
The more negative of the two conductors at the output of power supply (PSU).
A function which decreases with increasing temperature. Usually relates to resistance but may also refer to capacitance, voltage, etc.
Acronym for National Electrical Manufacturers Association.
The ac return somewhere connected to ground, but which should not be used for ground because it is a current carrying path.
The random component on a power supply's output which is unrelated to source and switching frequency. Noise is usually expressed in peak-to-peak units over a specified bandwidth (unless specified otherwise).
The stated value. Note, this may well be different to the measured value.
The stated value of a voltage, this may well be different to the measured value (for many reasons, including setting accuracy, etc.).
See Negative Temperature Coefficient.