X-Nico

6 unusual facts about Direct current


Electric jacket

They usually obtain power for their heating processes through a cord which can be plugged into a motorcycle's electric system.

Model warship combat

All active mechanical systems are required to be operated via electrical or pneumatic means.

Mogador-class destroyer

Their DC electrical supply was only 115V, whereas larger cruisers with power-operated turrets had a 230V system.

Sector antenna

Grounding is very important for an outdoor antenna so all metal parts are DC-grounded.

Space Shuttle Solid Rocket Booster

Electrical power distribution in each SRB consists of orbiter supplied main DC bus power to each SRB via SRB buses labeled A, B and C. Orbiter main DC buses A, B and C supply main DC bus power to corresponding SRB buses A, B and C. In addition, orbiter main DC bus C supplies backup power to SRB buses A and B, and orbiter bus B supplies backup power to SRB bus C. This electrical power distribution arrangement allows all SRB buses to remain powered in the event one orbiter main bus fails.

Stockholm metro

The Stockholm metro runs electrically using a third rail with a nominal operating voltage of 650 V DC on line 13,14, 17, 18 and 19,and 750 V DC on the line 10 and 11.


Central Power Research Institute

Destruction Test on Power Electronics Capacitors of ratings, 560 F, 3.8 kV DC, was conducted as per IEC 61881-1999 was conducted in the power Capacitors laboratory for the first time which has helped the customer in verifying the design aspects with reference to safety/protection

CHAdeMO

CHAdeMO (sometimes stylized CHΛdeMO, with uppercase Greek letter lambda) is the trade name of a quick charging method for battery electric vehicles delivering up to 62.5 kW of high-voltage direct current via a special electrical connector.

Eijsden railway station

A problem with this is the fact that the overhead lines at the railway station carry 3kV direct current, like the Belgian railway network, whereas the Dutch railway network carries 1.5kV.

Electrical network

They are thus more easily analyzed, using powerful frequency domain methods such as Laplace transforms, to determine DC response, AC response, and transient response.

Electronics

Rasberry crazy ants have been known to consume the insides of electrical wiring, and nest inside of electronics; they prefer DC to AC currents.

Extra-low voltage

The International Electrotechnical Commission and its member organizations define an ELV circuit as one in which the electrical potential of any conductor against earth (ground) is not more than either 25 volts RMS (35 volts peak) for alternating current, or ripple-free 60 volts for direct current under dry conditions.

H0m gauge

Modern HOm trains run on realistic-looking two-rail track, which is powered by direct current (varying the voltage applied to the rails to change the speed, and polarity to change direction), or by Digital Command Control (sending commands to a decoder in each locomotive).

Odic force

2010: The villainous fictional version of Thomas Edison who appears in Atomic Robo comic books is obsessed with harnessing the Odic force (via direct current) to unlock the secret of immortality.

Power supply rejection ratio

But testing is not confined to DC (zero frequency); often an operational amplifier will also have its PSRR given at various frequencies (in which case the ratio is one of RMS amplitudes of sinewaves present at a power supply compared with the output, with gain taken into account).

Ultimo Power Station

Each dynamo (generator) was rated at 849.75 kilowatts (kW) at 550 volts direct current (1545 amperes) and could be overloaded by up to 50 percent to satisfy peak demand.

Ultimo Power Station boasted a mixture of equipment, initially consisting of American-made steam engines coupled to dynamoelectric machines (direct current generators).

Variable-speed air compressor

The most common form of VSD technology in the air compressor industry is a variable-frequency drive, which converts the incoming AC power to DC and then back to a quasi-sinusoidal AC power using an inverter switching circuit.

Wolfson Centre for Magnetics

The power loss, permeability, apparent power, flux density, magnetic field, Barkhausen noise, magnetostriction characteristics of soft magnetic materials and hard magnetic materials can be measured with a range of test systems under DC, AC and rotational magnetising conditions.


see also

Common battery

Common battery may include one or more power conversion devices to transform commercial power to direct current, with an electrolytic battery floating across the output.

Electrology

Galvanic and thermolysis are often combined in a method known as blend, developed by Arthur Hinkel in 1948, which uses both RF and direct current, combining many of the advantages of galvanic and thermolysis.

Marienfelde

Near the end of World War II, as part of the Elbe-Project, the world's first high-voltage direct current transmission lines were built from a power plant in Dessau, on the Elbe river, to Marienfelde.

Transcranial direct-current stimulation

In 1801, Giovanni Aldini (Galvani's nephew) started a study in which he successfully used the technique of direct current stimulation to improve the mood of melancholy patients.