Comparison of leakage currents in the power supply bulk and SOI transistors: calculations and experiment

2019 ◽  
Author(s):  
Mikhail Ilnitsky ◽  
Vladimir Vdovin ◽  
Andrey Egorkin ◽  
Valentin Antonov ◽  
Ida Tyschenko ◽  
...  
Keyword(s):  
Power Supply ◽  
Leakage Currents

scholarly journals Problems of Varistor Quality Assessment During Exploitation

2012 ◽  
Vol 19 (2) ◽  
pp. 395-404 ◽  
Author(s):  
Janusz Smulko ◽  
Marek Olesz ◽  
Lech Hasse ◽  
Leszek Kaczmarek ◽  
Grzegorz Lentka
Keyword(s):  
Quality Assessment ◽  
Power Supply ◽  
Diagnostic System ◽  
High Energy ◽  
Power Networks ◽  
Leakage Currents ◽  
Laboratory Equipment ◽  
Supply Networks ◽  
Industry Applications ◽  
High Energy Consumption

Problems of Varistor Quality Assessment During Exploitation Varistors are commonly used elements which protect power supply networks against high-voltage surges or lightning. Therefore, quality and endurance of these elements is important to avoid losses when an expensive laboratory equipment would not be protected from random overvoltages. Additionally, excessive leakage currents generate serious costs due to high energy consumption. The paper presents shortly properties of varistors that comprized different ZnO grain types and can have various quality which changes continuously during exploitation (due to exposition to overheating and overvoltage pulses). Therefore, it is important to monitor varistors during their ageing (causing changes within their microstructures). A few methods of varistor property diagnosis were considered and compared with the methods currently applied in laboratory or industry applications. A new measurement (diagnostic) system that can monitor varistors during ageing and can be widely applied in power networks is presented. The proposed system fulfills requirements of the industrial customers which demand various methods for power line protection. The proposed system can be simply developed into a more advanced wireless diagnostic system of long power supply lines.

Picosecond Imaging Circuit Analysis of Leakage Currents in CMOS Circuits

2002 ◽  
Author(s):  
Stas Polonsky ◽  
Alan Weger ◽  
Moyra McManus
Keyword(s):  
Power Supply ◽  
Light Emission ◽  
Noise Analysis ◽  
Cmos Circuits ◽  
Photon Detectors ◽  
Leakage Currents ◽  
New Techniques ◽  
Supply Noise ◽  
State Detection ◽  
Logic State

Abstract The light emission from ever increasing OFF-state leakage currents in advanced CMOS technologies can now be reliably measured using existing photon detectors. The measurements of such an emission provide valuable information about the operation of ICs. In this paper we suggest and experimentally confirm two new techniques based on such measurements - Transient Logic State Detection and Power Supply Noise Analysis.

scholarly journals Gate Leakage Reduction by Clocked Power Supply of Adiabatic Logic Circuits

2005 ◽  
Vol 3 ◽  
pp. 281-285 ◽  
Author(s):  
Ph. Teichmann ◽  
J. Fischer ◽  
E. Amirante ◽  
St. Henzler ◽  
A. Bargagli-Stoffi ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Power Supply ◽  
New Technologies ◽  
Clock Cycle ◽  
Cmos Process ◽  
Gate Leakage ◽  
Clock Period ◽  
Leakage Currents ◽  
Additional Energy ◽  
Adiabatic Logic

Abstract. Losses due to gate-leakage-currents become more dominant in new technologies as gate leakage currents increase exponentially with decreasing gate oxide thickness. The most promising Adiabatic Logic (AL) families use a clocked power supply with four states. Hence, the full VDD voltage drops over an AL gate only for a quarter of the clock cycle, causing a full gate leakage only for a quarter of the clock period. The rising and falling ramps of the clocked power supply lead to an additional energy consumption by gate leakage. This energy is smaller than the fraction caused by the constant VDD drop, because the gate leakage exponentially depends on the voltage across the oxide. To obtain smaller energy consumption, Improved Adiabatic Logic (IAL) has been introduced. IAL swaps all n- and p-channel transistors. The logic blocks are built of p-channel devices which show gate tunneling currents significantly smaller than in n-channel devices. Using IAL instead of conventional AL allows an additional reduction of the energy consumption caused by gate leakage. Simulations based on a 90nm CMOS process show a lowering in gate leakage energy consumption for AL by a factor of 1.5 compared to static CMOS. For IAL the factor is up to 4. The achievable reduction varies depending on the considered AL family and the complexity of the gate.

New replica method with plasma polymerized film by glow discharge

1988 ◽  
Vol 46 ◽  
pp. 414-415
Author(s):  
A. Tanaka ◽  
M. Yamaguchi ◽  
T. Hirano
Keyword(s):  
Power Supply ◽  
Plasma Polymerization ◽  
Vacuum Chamber ◽  
Complex Surface ◽  
Replica Method ◽  
Metal Extraction ◽  
High Voltage Power Supply ◽  
Negative Glow ◽  
Hydrocarbon Gas ◽  
Hydrocarbon Molecules

The plasma polymerization replica method and its apparatus have been devised by Tanaka (1-3). We have published several reports on its application: surface replicas of biological and inorganic specimens, replicas of freeze-fractured tissues and metal-extraction replicas with immunocytochemical markers.The apparatus for plasma polymerization consists of a high voltage power supply, a vacuum chamber containing a hydrocarbon gas (naphthalene, methane, ethylene), and electrodes of an anode disk and a cathode of the specimen base. The surface replication by plasma polymerization in negative glow phase on the cathode was carried out by gassing at 0.05-0.1 Torr and glow discharging at 1.5-3 kV D.C. Ionized hydrocarbon molecules diffused into complex surface configurations and deposited as a three-dimensionally polymerized film of 1050 nm in thickness.The resulting film on the complex surface had uniform thickness and showed no granular texture. Since the film was chemically inert, resistant to heat and mecanically strong, it could be treated with almost any organic or inorganic solvents.

Development of the algorithm for the selection of a wind generator-based autonomous power supply system

2019 ◽  
Vol 2 (1) ◽  
pp. 8-16 ◽  
Author(s):  
P. A. Khlyupin ◽  
G. N. Ispulaeva
Keyword(s):  
Wind Turbines ◽  
Power Supply ◽  
Alternative Energy ◽  
Power Supply System ◽  
Supply System ◽  
Power Generators ◽  
Energy Devices ◽  
Wind Generator ◽  
Alternative Energy Sources ◽  
Selection Of

Introduction: The co-authors provide an overview of the main types of wind turbines and power generators installed into wind energy devices, as well as advanced technological solutions. The co-authors have identified the principal strengths and weaknesses of existing wind power generators, if applied as alternative energy sources. The co-authors have proven the need to develop an algorithm for the selection of a wind generator-based autonomous power supply system in the course of designing windmill farms in Russia. Methods: The co-authors have analyzed several types of wind turbines and power generators. Results and discussions: The algorithm for the selection of a wind generator-based autonomous power supply system is presented as a first approximation. Conclusion: The emerging algorithm enables designers to develop an effective wind generator-based autonomous power supply system.

SISTEM AUTOMATIC SWITCH REDUNDANT UPS UNTUK BEBAN ESSENSIAL

2019 ◽  
Vol 5 (1) ◽  
pp. 35-45
Author(s):  
Markus Dwiyanto Tobi ◽  
Alimuddin Mappa
Keyword(s):  
Power Supply ◽  
Working Condition ◽  
Control Circuit ◽  
Energy Sources ◽  
Main Equipment ◽  
Telecommunication Equipment ◽  
Input Condition ◽  
Research Designs ◽  
Switch Circuit

The role of the power supply device is to produce, process and distribute energy sources. Telecommunication equipment can only operate if it has continuous supply. Therefore, to maintain the continuity of the supply, a UPS (Uninterruptable Power Supply) device system is needed so that the supply to the Essential Load device will remain available so that continuity will be maintained. This research designs and proposes how a series of automatic redundant switch systems on UPS to ensure the availability of power supply for the main equipment of telecommunications systems. The Auto switch circuit is designed to have 3 (three) working stages which will trigger the relay driver as control circuit, namely the normal working condition of the contactor input K1 is present, the input condition is zero (lost), and the input condition is present. This system can automatically supply power to telecommunications equipment.

Case Study of the Design for Reliability for Remanufactured Military Power Supply

2020 ◽  
Vol 20 (3) ◽  
pp. 209-215
Author(s):  
Hyun-Seok Song ◽  
Min-Ho Son ◽  
Sung-Ju Yoo ◽  
Do-Hyun Jung ◽  
Boo-Hee Park
Keyword(s):  
Power Supply ◽  
Military Power ◽  
Design For Reliability
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