On the Influence on the Operation of the Quadrated Transistor of Short Circuits between the Gate of a Single Transistor, its other Outputs and the Power Source

The influence on the operation of the quadrated transistor of short circuits between the gate of the field transistor and its other outputs (source, drain, substrate) and also its power source with input signals 0 and 1 on the gate for two variants of the quadrated transistor circuit is considered. It is shown that in an overwhelming number of cases the result at the output of the quadrated transistor is correct.

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Choice of commutation device and development of the scheme of a universal sectionalizing point with automatic load transfer function for the 0.38 kV electric network

E3S Web of Conferences ◽

10.1051/e3sconf/201912402011 ◽

2019 ◽

Vol 124 ◽

pp. 02011 ◽

Cited By ~ 1

Author(s):

A. V. Vinogradov ◽

A. V. Vinogradova ◽

M. O. Ward ◽

A. N. Kharkhardin ◽

A. I. Psaryov ◽

...

Keyword(s):

Transfer Function ◽

Power Supply ◽

Load Transfer ◽

Power Source ◽

Power Lines ◽

Electrical Networks ◽

Transformer Substation ◽

Load Transfer Function ◽

Short Circuits ◽

Switching Devices

The overestimated length of rural power lines of 0.38 kV leads to the fact that it is often not possible to fulfill both the sensitivity conditions of the protective device installed at the transformer substation and protecting the line from overloads and short circuits, and the requirements of the power supply reliability of consumers. This problem can be solved by installing in-line universal sectionalizing point equipped with an automatic load transfer function. The use of these devices allows dividing a line into sections provides the necessary sensitivity of protection for each section of the line and the possibility of supplying power to undamaged areas from a backup power source. In addition, only with the use of automated switching devices installed in power lines, it is possible to create intelligent electrical networks. When developing these devices, it is necessary to take into account the electromechanical characteristics of switching devices that are planned to be used for switching lines.

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Mathematical Formula to Determine Geometrical Dimensions of Electrode Metal Droplets Transferred with Short Circuits

Materials Science Forum ◽

10.4028/www.scientific.net/msf.938.1 ◽

2018 ◽

Vol 938 ◽

pp. 1-6

Author(s):

D.P. Il’yashchenko ◽

D.A. Chinakhov ◽

K.Yu. Kirichenko ◽

V.N. Sydorets

Keyword(s):

Chemical Elements ◽

Short Circuit ◽

Power Source ◽

Mathematical Formula ◽

Metal Parts ◽

Energy Impact ◽

Short Circuits ◽

Electrode Metal ◽

Geometrical Dimensions ◽

Metal Droplets

A method is described to determine geometrical dimensions of electrode metal droplets depending on short circuit duration. It provides a quantitative evaluation of the electrode metal transfer and the energy impact on metal parts being welded. It is proved that using inverter power source decreases the size of droplets transferred to the welding pool by 24% in average if compared with a diode power source. It also reduces overheating of the droplets which improves efficiency of transferring chemical elements from the electrode to the weld metal.

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Automatic Power Supply Control to Ensure No Break Power

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset196254 ◽

2019 ◽

pp. 249-255 ◽

Cited By ~ 1

Author(s):

DVN Ananth ◽

G. Jogarao ◽

K. Sirisha ◽

B. Kumar ◽

K. Anusha Sai Kumar. G

Keyword(s):

Power Supply ◽

Power Source ◽

Current Status ◽

Uninterrupted Power Supply ◽

Input Signals ◽

Different Sources

The main objective of this project is to provide uninterrupted power supply to a load, by selecting the supply from any source out of 4 different sources such as mains, generator, and inverter and solar automatically in the absence of any of the source. As we know that the demand for electricity is increasing every day and frequent power cuts is causing many problems in various areas like industries, hospitals, offices and houses which are necessary to be prevented. An alternative arrangement for power source must be used. This project uses four switches to demonstrate the respective failure of that source of supply. A microcontroller of ATmega328 family is used. The output of the microcontroller is given to the relay driver IC, which switches appropriate relay to maintain an uninterrupted supply to the load. When any of the switches is pressed it shows the absence of that particular source. Switches are connected to microcontroller as input signals. The output is observed using a lamp drawing power supply from mains initially. On failure of the mains supply (which is actuated by pressing the appropriate switch) the load gets supply from the next available source, say an inverter. If the inverter also fails it switches over to the next available source and so on. The current status, as to which source supplies to the load is also displayed on an LCD. As it is not feasible to provide all 4 different sources of supply, one source with alternate switches are provided to get the same function.

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Rendez vous with Saturn's rings

International Astronomical Union Colloquium ◽

10.1017/s0252921100101885 ◽

1984 ◽

Vol 75 ◽

pp. 743-759 ◽

Cited By ~ 2

Author(s):

Kerry T. Nock

Keyword(s):

Solar Energy ◽

Electric Propulsion ◽

Power Source ◽

Propulsion System ◽

Low Thrust ◽

Ring Plane ◽

The Earth ◽

Total Impulse ◽

Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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