Power Supplies A to Z

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 From 'A' To 'AWG'
B From 'Back Electromotive Force (Back EMF)' To 'Bus Converter '
C From 'C' To 'Curve B (or Class B)'
D From 'dB' To 'Dynamic Load'
E From 'Earth' To 'External Fusing'
F From 'F' To 'Fusible Link'
G From 'Galvanic' To 'Grounded'
H From 'H' To 'Hz'
I From 'I ' To 'Isolation Voltage'
J From 'J ' To 'Junction Field Effect Transistor (JFET)'
K From 'K' To 'kWh'
L From 'L ' To 'LVD'
M From 'Magnetic Amplifier (Mag Amp)' To 'Multi-Resonant Topology (MRT)'
N From 'Nano ' To 'NTC'
O From 'OCV' To 'OVP'
P From 'P' To 'PWM '
Q From 'Quarter Brick ' To 'Quarter Brick '
R From 'R' To 'RS485'
S From 'S' To 'System International d’Unites (SI)'
T From 't' To 'TUV '
U From 'U' To 'USB'
V From 'V' To 'Vss'
W From 'W' To 'Working Voltage'
X-Z From 'X ' To 'Zetta '
# From '°C ' To '°F '

Term of the day : 'Switching Frequency'

The rate at which the dc voltage is switched in a converter or power supply (PSU). In power factor corrected PSUs, there will be two switching frequencies, the boost converter switching frequency and the forward converter switching frequency. Additionally, some power supplies may have additional converters with their own switching frequencies (for example buck regulators).

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