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Basics of Electricity/Electronics
Basics of Electricity/Electronics

... ATTENTION! Capacitors can store a charge for a considerable time after the power to them has been switched off. This charge can be extremely dangerous! A large electrolytic capacitor charged to only 5 or 10 Volts can melt the tip of a screwdriver placed across its terminals! Never touch the terminal ...
PRODUCT INFORMATION – FAQ`s
PRODUCT INFORMATION – FAQ`s

... You can order a replacement solenoid coil of a different AC or DC voltage, but there are limitations on interchange. The valve core is originally matched to an AC current or to a DC current. Therefore, you can replace an original AC solenoid with one of a different voltage. Likewise for the DC volta ...
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Electricity and Magnetism

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EMH11,UMH11N,IMH11A : Transistors

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... Electromagnets – magnet made by an electric current Temporary Magnets – made from materials that are easy to magnetize – lose magnetism easily ...
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ATS48_AO Analog output assigment calculation

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... with reactors and resistors to form filters providing low impedance paths for the harmonics in order to limit them from entering into the connected AC network. ...
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... In the past, rectification used to be a much simpler task. But in recent times, rectifiers have become much more complicated systems rather than simple circuits. They include pulse-width modulated converters such as the boost converter with control systems that regulate the ac input current waveform ...
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Racktivity “Everything Power” Glossary US: +1.650.361.9700 EU: +

... static, and radiated energy, and to maintain the main service entrance at earth potential. EARTHING ELECTRODE A grounding electrode, water pipe, or building steel, or some combination of these, used for establishing a building’s earth ground. EFFICIENCY The ratio of the output to input power times 1 ...
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... A light-emitting diode (LED) is a twolead semiconductor light source. It is a p–n junction diode, which emits light when activated. When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. ...
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... Figure 2. Full-wave rectifier using center-tapped transformer. 4. Design, simulate in LTSpice and build in the lab a half-wave rectifier with Vm = 10 V, f = 60 Hz (remember  = 2f = 2/T), R = 1 k and Vr  2% of Vm. 5. In both LTSpice and in the lab, adjust the RC time constant to be approximatel ...
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... The Power MultiMeter (PMM-1) version 2.5 is a nextgeneration multifunction instrument for measuring ac or dc voltage, ac primary and secondary current, power, reactive power, power factor, phase angle and frequency of a single or three-phase electrical system. In the single-phase mode, the PMM-1 is ...
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4 l General information 12 l Single

... Transformers may be designed with primary as well as secondary taps. Taps on the primary side serve towards adaption and use of the transformer with various grid voltages. The increased winding space requirement frequently makes it necessary to go to the next higher transformer type here. For grid a ...
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HVDC links in AC power system
HVDC links in AC power system

... France-Spain HVDC link (2015) one HVDC link embedded in a meshed AC network and influencing more than 2 countries France-Italy HVDC link (2019) two HVDC links embedded in a meshed AC network and electrically close to each other Midi-Provence HVDC link ...
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Mercury-arc valve



A mercury-arc valve or mercury-vapor rectifier or (UK) mercury-arc rectifier is a type of electrical rectifier used for converting high-voltage or high-current alternating current (AC) into direct current (DC). It is a type of cold cathode gas-filled tube, but is unusual in that the cathode, instead of being solid, is made from a pool of liquid mercury and is therefore self-restoring. As a result, mercury-arc valves were much more rugged, long-lasting and could carry much higher currents than most other types of gas discharge tube.Invented in 1902 by Peter Cooper Hewitt, mercury-arc rectifiers were used to provide power for industrial motors, electric railways, streetcars, and electric locomotives, as well as for radio transmitters and for high-voltage direct current (HVDC) power transmission. They were the primary method of high power rectification before the advent of semiconductor rectifiers, such as diodes, thyristors and gate turn-off thyristors (GTOs) in the 1970s.
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