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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 #
Nano
SI prefix multiplier. Multiplies by 10-9. So 100 nF = 100 x 10-9 F. Written as 'nano'. Abbreviated to 'n'.
National Electrical Manufacturers Association (NEMA)
Industry trade organisation “providing a forum for the standardisation of electrical equipment” with headquarters in Rosslyn, Virginia. See http://www.nema.org/
Negative Rail
The more negative of the two conductors at the output of power supply (PSU).
Negative Temperature Coefficient (NTC)
A function which decreases with increasing temperature. Usually relates to resistance but may also refer to capacitance, voltage, etc.
NEMA
Acronym for National Electrical Manufacturers Association.
Neutral
The ac return somewhere connected to ground, but which should not be used for ground because it is a current carrying path.
No Load Voltage
Voltage at the output terminals of a power supply (PSU) when no current is flowing. See Open Circuit Voltage.
Noise
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).
Noise Filter
See Filter.
Nominal Value
The stated value. Note, this may well be different to the measured value.
Nominal Voltage
The stated value of a voltage, this may well be different to the measured value (for many reasons, including setting accuracy, etc.).
NTC
See Negative Temperature Coefficient.
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 #
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