voltage level
91Power outage — A power outage (also known as power cut , power failure , power loss , or blackout ) is the loss of the electricity supply to an area.The reasons for a power failure can for instance be a defect in a power station, damage to a power line or other …
92Power electronics — This article refers to the technology of power electronics. For the musical genre see power electronics Power electronics is the applications of solid state electronics for the control and conversion of electric power IntroductionsPower… …
93Precision rectifier — The super diode or precision rectifier is a configuration obtained with an operational amplifier in order to have a circuit behaving like an ideal diode or rectifier. It can be useful for high precision signal processing.The basic circuit… …
94Pre-charge — of the powerline voltages in a high voltage DC application is a preliminary mode which current limits the power source such that a controlled rise time of the system voltage during power up is achieved.When high voltage systems are designed… …
95Commutation cell — The commutation cell is the basic structure in power electronics. It is composed of an electronic switch (today a high power semiconductor, not a mechanical switch) and a diode. It was traditionally referred to as a chopper, but since switching… …
96Mercury-arc valve — Mercury rectifier on display in Beromünster, Switzerland before being decommissioned A mercury arc valve (mercury vapor rectifier) is a type of electrical rectifier used for converting high voltage or high current alternating current (AC) into… …
97Per-unit system — In electrical engineering in the field of power transmission a per unit system is the expression of system quantities as fractions of a defined base unit quantity. Calculations are simplified because quantities expressed as per unit are the same… …
98Mercury arc valve — A mercury arc valve (mercury vapor rectifier) is a type of electrical rectifier which converts alternating current into direct current. Rectifiers of this type were used in electric motor power supplies for industry, in electric… …
99Gain — For other uses, see Gain (disambiguation). In electronics, gain is a measure of the ability of a circuit (often an amplifier) to increase the power or amplitude of a signal from the input to the output. It is usually defined as the mean ratio of… …
100Line regulation — is the capability to maintain a constant output voltage level on the output channel of a power supply despite changes to the input voltage level. Line regulation is expressed as percent of change in the output voltage relative to the change in… …
