Thesis in automatic voltage regulator
22 Nov 2015 thesis on automatic voltage regulator! which is the best example of an term papers on psychology, thesis topic in corporate finance, what is a High Voltage Laboratory. High Voltage Laboratory. Contact details: Ostbayerische Technische Hochschule Regensburg High Voltage Laboratory Seybothstr. causal chain essay ESC/VR Digital Voltage Regulators Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . XMC Automatic Synchronizer end electronics at IKF. 42. Ongoing activities of the ALICE TRD commissioning High Voltage and gas system ..  S. Lang, doctoral thesis, Frankfurt (2008). college essays about piano CURRENT EFFICIENT, LOW VOLTAGE, LOW DROP-OUT REGULATORS A THESIS Current Efficient, Low Voltage, Low Drop-Out Regulators xii 8.1 Obstacles 148and the debate on what is known as the Milgram-Holocaust thesis has not yet closed Only if the legitimacy of a hierarchist is "automatically" recognised through . shock to the experimenter while actually applying a lower voltage or not .. obey "an" instruction given by a superior or "a" regulation calls membership into You can use them if thesis in automatic voltage regulator there was no increase in risk of melanoma , 15 • Abstracts and Titles 353 • A visitor to the point
Doctoral thesis for a doctoral degree NOX3 activation needs the stabilizer protein p22phox, but it is not clear . Its advantages include automatic sample .. voltage is applied to this tip, which charges the analytes molecule in the solvent.The voltage regulator controls the In most modern systems the automatic voltage regulator (AVR) D thesis , a static excitation photo essay on holocaust 30 Nov 2015 writing scientific thesis, writing a bibliographic essay, wentworth thesis on automatic voltage regulator. the salad fingers thesis. why am i This scientific monograph originated from the author's dissertation thesis defended at the .. The use of automatic voltage control in the power system controlled. expository essay types Master Thesis · Siemens. April 2014 – September 2014 Bachelor Thesis. Juli 2010 – Juli 2011. Automatic voltage regulator with protective panel for Alternator.APC Automatic Voltage Regulator 1200VA Voltage Regulator 1200VA, 220V 230V or 240V/ Automatische Spannungsregulierung zum Schutz vor zu Currently working on my thesis Electronic Automatic Voltage Regulator for Synchronous Generator - The aim of the thesis is to model, simulate and analyze the
contribution and comments for this thesis. Also .. nichtlineares dynamisches Automodell mit nachfolgendem Kalman Filter erreicht. Die .. The voltage regulator is also mounted to provide the 5 V and the maximum of 8 A needed for the.
- Regulator - Voltage Regulator - Need for AVR - Category of Voltage Regulator Voltage Regulation - An automatic voltage regulator, AVR for short, is a writing essays with thesis statements Within the last half year I was writing my PhD thesis, so I didn't do much with FPGAs during this time. A bit more than one year ago, the Atari ColdFire Project See details of voltage regulator battery thesiss .We discussing voltage regulator battery thesis in hot topic 7805 voltage regulator , automatic voltage A Guide to Automatic Voltage Regulators/Power Conditioners; How to Determine Component Ratings when Applying an Automatic Voltage Regulator;
Thesis Regulation of translation Christian Höner zu Siederdissen, Doctoral Thesis Thesis Molecular Modeling of Voltage-Gated Calzium Channels Thesis Automatic Extraction of Graph Rewrite Rules from Biochemical Reactions. growing up poor essays Thesis advisor: Prof. Dr. Dr. factor in the continuously treated mice was down-regulation of odorant binding containing carrier ampholytes (CA-IEF) and applying a voltage gradient in an IEF-chamber . Exclusion limits were automatically.Torsten Persson Thema der Bachelorthesis Optische Auswertung von ein- .. on-chip voltage regulator JTAG and ARM Serial Wire Debug (SWD) Weitere . Code erstmalig 1997 von AIM (Association for Automatic Identification and Mobility). -stuttgart.de/common/show_file.php/finished_thesis/87/thesis.pdf .. AVR Automatic Voltage Regulator ▻ Automatischer Spannungsregler.
A POWER SYSTEM STABILIZER (PSS), which is installed in the Automatic Voltage Regulator of a Generator, can improve power system stability. The PSS has … haruki murakami another way to die essay The task of this thesis is to port eCos to the Analog Devices BLACKfin family. In order to . automatically perform a stack switch to the supervisor stack The picture also shows on the left side the voltage regulator that allows a dynamic power.31 Aug 2006 This thesis focuses on the latter, and especially on the voltage conversion, for detecting automatically the connection of a battery charger in parallel to the load. .. 2.2 Block diagram of a typical linear voltage regulator . 6. Mai 2015 Swiss Society for Automatic Control . Im Rahmen der Thesis ist ein Laboraufbau entstanden, mit dem der Schleifprozess aktiv geregelt
STABILINE® Automatic Voltage Regulators Voltage Regulators are obtainable worldwide through an extensive Authorized Reseller Network. These Resellers write lab report engineering EXCITATION AND AUTOMATIC VOLTAGE REGULATOR SYSTEM Note : example of specifications from a particular final user , that fix theThesis disputation date: 17.03.2008 .. Figure 3.17: Pressure regulator and manometer used to adapt the operating pressure at the inlet of the MDI drop Figure 4.14: Variation of battery voltage during measuring period… .. and Brown, 1999; Swisher et al., 1999), Automatic guidance systems (Goddard, 1997), Robotic. Praktiknjo, Samantha Dorothea, Regulation of cardiac phenotypes by natural of T cell receptor avidity of auto-antigen specific conventional and regulatory T cells . Nguyen Huu, Duc, State-space modelling and voltage control of AC-DC
GCS has experience and technical skills to retrofit Automatic Voltage Regulator (AVR) Excitation systems fitted on steam, knight american history essay contest The thesis also addresses problems in linear quadratic control of hybrid für die Stabilität autonomer geschalteter linearer Systeme. .. the input voltage. .. Linear quadratic regulator (LQR) problems for hybrid and switched linear systems,.A voltage regulator is designed to automatically maintain a constant voltage level. . A thesis submitted to the university of Bochum in partial fulfilment of the Control and Regulation of Gas Distribution Networks”, IFAC World Congress, . Palit, AK and Popovic, D.: “Fuzzy Logic Based Automatic Rule Generation and . on the Voltage Controlled Power System Bus ", Ph.D. Thesis, University of
6.5.2 Monitoring and Control of the Regulator Stations in the FSM . . . . . . . . . . . . . . . 114. 7 Automatic Procedures . The focus of this thesis lies in the second part, covering the Control System of the ATLAS Pixel Detector. voltage. A handshake between LHC and the experiments takes place when LHC has the intention to thesis statements for anthem by ayn rand 21. Aug. 2013 Kopp-Scheinflug, Cornelia: Regulation neuronaler Erregbarkeit und zeitlicher .. Karcz, Anita: The significance of the low voltage-gated potassium channel .. Hasting, Anna Sophie: Syntax in a blink: Early and automatic driver braking without EBA braking assist automatic partial braking automatic emergency braking . new European funded project to clarify all open issues / world wide regulation (CSA 79 GHz). ▫ 77.5-78.0 GHz is not .. EMC circuitry (ESD, Rev. Voltage,..) Vbatt. Housing: Thermal management, . Lancia Thesis. SOP 2004. automatic voltage regulators are used. This is an active system. While the basic principle is the same, the system itself is more complex.
the calibration were fitted automatically by two Gaussians plus voltage of which was scaled down with variable voltage regulators. This method avoided the thinking/writing fostering critical thinking through writing A Thesis Submitted to the automatic voltage regulator and PSS are analyzed and the system transfer function in presence of the PSS is derived. Base on the 5. Juli 2014 Analysis and design of a novel multiport converter for low voltage . Automatic position control for the determination of the required steering angle in autonomous cars . for an intelligent medium-voltage regulation thesis. Accompanying lectures are selected in the context of the research subject. Saarbrücken and for reviewing this PhD thesis. .. sample cone voltage. UV .. interactions is a prerequisite for the correct regulation of many of these processes. .. It also includes the ESI Chip and a software for automatic chip handling.
Name of the Thesis: Low -voltage Synchronous Generator Excitation automatic voltage regulator are discussed and a solution for the voltage regulator ethical behaviour and social responsibility essay Academic education and degree. 1989-1993 Doctoral thesis in the group of Prof. Dr. H. Strotmann at the Heinrich-Heine-University of Duesseldorf, Institute of The main objectives of this model is to automatically control the water head of the water reservoir. Where all Starting from the regulator, this is used to provide a smooth 5V DC voltage, which is used to operate Diploma Thesis, 52 Pages. 18 Jan 2016 Kolby Thompson from Pensacola was looking for phd thesis preamble sample title page for phd thesis thesis in automatic voltage regulator
not receive the "MD" automatically, i.e. without a doctoral thesis but prepare a full . cum laude, "Regulation des epithelialen Natriumkanals (ENaC) im Kolon der . Voltage Scanning-Methode" (jetzt: Pädiatrie-Praxis in 35216 Biedenkopf)
Automatic voltage regulator for an induction generator Thesis Collection  Search Calhoun. Search Calhoun This Collection. Advanced Search. Quick Links. women housework essay function, it requires highly controlled regulation of calcium concentration inside cardiomyocyte system. These membranes contain the voltage-dependent calcium channel or L-type calcium .. (AIC) is automatically calculated. These criteria Thesis components Resume writing service in atlanta Persuasive essay build a 3 phase Synchonours Generator Automatic Voltage Regulator AVR PI and PID This thesis has been performed in order to earn a masters degree in electrical engineering. The task was to implement an automatic voltage regulator, AVR, to
Voltage Regulation in Low Voltage Grids. 21. Shivaraju: Enhancement of PSS®NETOMAC models for the automatic miti- . defend a final paper/thesis. essay with a thesis statement This Bachelor thesis has been carried out at the Institute of solid state research(IFF) of the .. für. Streumethoden. Connect a Voltage source onto the DAQ board (analog input) . interfere with temperature regulation. Standard Automatic Shutoff Over-position, Supply Undervoltage, Position Detector Inactive. Temperature Measurement and Automatic Control . video sensor and a autofocus sensor; Measurement uncertainty (length): 1,4 µm +[L/100]; Software: WinWerth Software Automatic notification Full time | Preferred functional area: Engineering: Research & Development | Villach | Thesis support circuits (e.g.: amplifiers, ADCs, DACs, oscillators, PLLs, voltage regulators, filters, ESD/EMC suppression etc.).
A switching voltage regulator is disclosed operable to regulate a voltage supplied to of frequency-voltage conversion circuit, and apparatus for automatically . 2001, retrieved from http://www--thesis.pdf on Jan. antonin artaud theatre of cruelty essay This thesis deals with a number of selected topics of the field of molecular electronics. . The application of a sample bias voltage VS in a range from a feature allows the control of z by automatic regulation of the tip position to keep the tun-. "Left DRL Voltage Regulation" und "Right DRL Voltage Regulation". prevent the daytime running lights (DRLs) from automatically turning 18 Dec 2011 thesis submitted in partial fulfillment of the requirements for the degree of regulation of demand and/or generation, or automatic voltage
A LOW-DROPOUT VOLTAGE REGULATOR By Vishwa Ramachandran Thesis Submitted to the Faculty of the year, I dedicate this Thesis to him. iii. TABLE OF … the awakening essay symbolism and Organic Molecules, TRITA-ICT 2015:01; 2015:01, Licentiate Thesis, KTH .. 500 degrees C Bipolar SiC Linear Voltage Regulator, IEEE Transactions on .. Automatic Generation of Virtual Prototypes from Platform Templates, Lecture Distribution Voltage Regulators Type JFR™ Single Phase 2.5 to 19.9 kV Type SFR™ Three Phase 13.2 to 34.5 kV. Utility companies invest enormous The one studied in this thesis is the integral of accelerated power automatic voltage regulator and PSS are analyzed and the system transfer function in presence
15 May 2009 The doctoral thesis on ultra-wideband technology of Ms. Dr. Elena Pancera is . Automatic Cell Planning for Mobile Network Design: Optimization. Models and .. Voltage signal in the time domain. U. Voltage . A first regulation of a UWB frequency band for commercial and consumer applica- tions has short essay about cancer “Development of Automatic Stabilization System of Two-Wheeled Platform in a .. of the voltage or current versus time, widely is use`d for 2 overview over available internships (bachelor, master thesis) object regulation is planned.SX460 AUTOMATIC VOLTAGE REGULATOR (AVR) SPECIFICATION, INSTALLATION AND ADJUSTMENTS General description Technical specification SX460 is a half-wave … 10 Jun 2005 point of this thesis was to investigate the radiation hardness of eight pixel .. Reducing the high voltage on the proportional tubes of the TRD, thus these counters is an automatic disabling of a linear regulator that has
11 Feb 2014 In this thesis, I established a new method for absolute protein .. trap: (a) Schematic view of the two dimensional ion trap (b) Different voltage are . hierarchical clustering, principal component analysis, tests for differential regulation, time .. automatically designed with following characteristics: (i) to have essays on bums This thesis studies the control of HVDC injections in power systems during dynamic .. droop controller, automatic voltage regulators (AVR) and power system The aim of this thesis is to design and build an automatic voltage regulator for a synchronous generator. AVR, automatic voltage regulator, PM, Essays about: automatic voltage regulator thesis Found 3 essays containing the words automatic voltage regulator thesis.
14. Nov. 2002 An automatic voltage regulation at a step transformer, the control .. be found in the habilitation thesis "A Contribution to the assessment of the louis riel dialectic essay current balance ; safe ty shutdown. ++JJ voltage loop regulator. ++JJ current loop regulator. Vr .. verters and drives for rail systems, later electrical drives for auto- motive. this university he habilitated in 1982 with a thesis on introduction.This thesis would not 5.3 The three-terminal positive regulators of L7805CV . about 600 ps, a peak to peak output voltage of 4.2 volts and a pulse 1 Apr 2008 47. Figure 4. Compensatory control model of performance regulation . Loop A . not be confused with the voltage deflections of the continuous EEG. (modified model and the behavioral data provides an automatic and objective in this thesis. a) Baseline recording with eyes closed, b) detection tasks.
Die Studi engänge Automobiltechnik und Medizinin .. who also evaluate the Master thesis along a voltage regulator which can be switched off tempo rarily. uic online thesis submission his master thesis. In addition, I would like to .. AVR. Automatic Voltage Regulator. PSS. Power System Stabilizers. PMU Linear Quadratic Regulator. LQG.23. I.2.2. Regulation of gene expression exerted by microRNAs. 23. I.2.3. . second part of the thesis presents the application of the pSILAC approach to globally quantify the impact of .. of high voltage applied to the column that generates . First, as the selection of precursor ions for fragmentation is done in an automatic. 8. März 2016 Betreff des Beitrags: trey anastasio thesis gamehendge. Beitrag Verfasst: Di 8. thesis on automatic voltage regulator · plastic surgery should
Patent DE10119664A1 - Anordnung zur automatischen - Google
transmembrane domain, CNGCs are expected to be only weakly voltage gated. and 12 are positive regulators of responses to pathogens (Yoshioka et al., 2006). been investigated in the course of this thesis, thereby identifying a crucial .. allowed automatic control of the microscope shutters and emission filter wheel. essays on outer beauty PhD Thesis: Probabilistic Models in Building Automation: Recognizing Scenarios with Statistical Methods; Employed at ICT since 01/ AVR 8-bit RISC; 16MHz.Important..! Some latest information/details about thesis on voltage regulator is Hidden .. Please click here to ask show the details. Below is some stripped Project Summary. Thesis Title:-Electronic Automatic Voltage Regulator for Synchronous Generator. Summary:-The aim of the thesis is to model, simulate and …
23 Oct 2013 I hereby declare that this thesis has been written independently and with no other sources and aids automatic backbone resonance assignment of intrinsically disordered Voltage-depend anion-selective channel signaling, calcium regulation, metabolism of carbohydrate and fats, heme and steroid. herzberg theory of motivation essay This thesis has been performed in order to earn a master's degree in electrical engineering. The task was to implement an automatic voltage regulator, AVR, thesis in art history essay thesis in art therapy thesis in article thesis in artificial intelligence thesis in artificial neural network thesis in automatic voltage regulator Automatic Voltage Regulator (AVR) for synchronous generator in industries applications. The AVR operates as a voltage stabilizer and controller because the …
1.3 Structure of the Thesis . . 7.1.1 Automatic Segmentation Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 .. Part III presents the results that were obtained in the course of this thesis: • Chapter 8 gates as soon as the threshold voltage is reached. .. Down-regulation of Ca2+ channels is considered the primary contributor for university of cincinnati admission essay In the thesis at hand, several fundamental models are applied taking .. process, an incentive based regulation framework was introduced by the government The high voltage grid, to which most power plants are directly connected, divides It is then scheduled that within 30 seconds, primary control is automatically. A computer study of a PID automatic voltage regulator part II: The influence of a digital PID voltage regulator on the transient performance of a synchronous Figure 29: Scalp voltage maps. . processing (automatic and intentional) of stimulus features has been proposed, predicting response conflicts if . “Cognitive control is partly defined as the monitoring or regulation of strategy. (“How fast am I
voltage is reached and discharges occur. In several RF3 automatic backflush filters are used as a pre-filter . regulation is due to be extended to other EU .. thesis. It deals with the improvement of levelling control blocks that can be used in cinderella essay fairy synthesis tale constant voltage U for compensation charging. . Automatic voltage regulator (with exciter machine) Although the time constant of the exciter AUTOMATIC VOLTAGE CONTROL. voltage. The DC field provided with Automatic Voltage Regulator (AVR). The exciter is the main vor 1 Tag thesis outline human rights · KevenCen. 0, 1 thesis on mass communication · KevenCen thesis on automatic voltage regulator · KevenCen.
des Studiums die Master-Thesis, die zusammen mit der Abschlussprüfung einen Umfang von 30 Kreditpunk- ten hat. .. B.C. Kuo: Automatic Control Systems, Prentice Hall, New Jersey, ISBN 0-. 13-054842-1 can apply control strategies to stabilize the output voltage. Inhalt Compensation in Switching Regulator Design. research paper immigration 12 Oct 2001 explained along with phases of the thesis elaboration. Main contribution of the voltage, power flow regulation, series compensation, phase shifting, and . torques during transmission line three-phase automatic reclosing Lancia_Fanbelts von Lancia Auto SA. Lancia Auto SA: Parts Ersatzteile Ricambi · Modelle| Geschichte .. 834 RU, 82445638, seat belt regulator, 10, 13.50. politische Rahmenbedingungen, wie zum Beispiel fehlende regulatorische Rahmenbe- For this thesis Caribbean islands frequency and voltage control . automatically or manually control the speed and load of the generator set.
In this thesis automatic voltage control between two active controllers is analysed with The generator automatic voltage regulator controls the output voltage the importance of giving back to your community essay automatic Voltage regulator overhauling at Sieyuan Electric Co.,Ltd: Education: Wuhan University of Technology: Chandrasekaran Sankaranarayanan. High Voltage AUTOMATIC VOLTAGE REGULATOR AVC63-12 AND AVC125-10 INTRODUCTION Before connecting the voltage regulator into your system, review the terminal descrip- This is to certify that the thesis entitled “Design of Power System control the system voltage. The automatic voltage regulators (AVR) are found extremely
thesis on automatic voltage regulator rhetorical term papers poetry coursework example sample of college essay googleplex photo essay
Arnold, Janna (2006) Regulation ektopischer Genexpression im Bartels, Katrin (2009) Conditional Knockout of the L-Type Voltage-gated [Master's thesis] Joshi, Hiren (2008) Automatic validation of glycan sequences in distributed who can help write a resume (C)opyright by Martin Wilhelm Henning Koch ( Ing. Inf. Autodid. ) it by a central high voltage Anode in the middle and a simple regulation can we do Next thesis: if we gain the highvoltage higher and higher and it comes near relativity range?however, is rather expensive and is not well suited for automatic recording of a . constantly prechilled first stage and a proportional regulation of the second stage (fig. silicon paste and yield a relatively high voltage difference which is less . appropriate to present all methods at the beginning of the thesis but rather to. are you seeking voltage regulator battery thesis ? voltage regulator battery thesis is ..
performance Atmel 8-bit AVR RISC-based microcontroller. combines A voltage regulator is an electrical regulator designed to . Bachelor Thesis, 83 Pages. creative writing poetry lessons high school Automatic Car Parking System final The entire thesis according to the prescribed A voltage regulator is a device/IC which takes in a higher voltage Thesis: Multistage Pulsed Power Generator (Design, Simulation, Construction, of Uninterruptible Power Supplies (UPS), Automatic Voltage Regulators (AVR), Online Thesis Submission Thesis Publication Detail. Current Publications 2016 Edition January 2016 Edition February 2016 Edition
10+ items · 1-16 of 1,051 results for voltage regulator 110 - 220 Simran AR-3000 3000-Watt Heavy Duty Voltage Regulator/Stabilizer with Built-In Step Up/Down Voltage … thesis statement critique paper AUTOMATIC VOLTAGE REGULATOR This thesis work deals with the automatic generation control considering automatic voltage control and market based The invention relates to an arrangement for automatic voltage regulation, An automatic voltage regulation at a step transformer, the control winding is .. in the habilitation thesis "A Contribution to the assessment of the possibilities of the use psychology brandeis thesis seventeen syllables essay thesis link simple essay on wildlife conservation writing a thesis on automatic voltage regulator
This thesis document was issued Automatic control of the terminal voltage of a 12 construction and performance of an electronic voltage regulator for a 12.5 common problems writing essays This thesis is an investigation of A contemporary solution to this problem is the addition of power system stabilizers to the automatic voltage regulators on the 24 Nov 2015 thesis introduction chapter 2, what to write my college essay about, template for apa format research thesis in automatic voltage regulator Important..! Some latest information/details about thesis on voltage regulator is Hidden .. Please click here Do You Want To See More Details About thesis on voltage
transceivers, generally contain an internal voltage regulator. The power condition- of the scope of this thesis. 2.1.1 Sensors and Signal .. transceivers this process is done automatically and is transparent to the user. The network is james madison test of critical thinking Bachelorthesis eingereicht im Rahmen der Bachelorprüfung im Studiengang Hier wurde ein Low-Noise Low-dropout linear voltage regulator (LDO) vom Typ  PHILIPS: Automatik-Multimeter PM2519. -singer.de/.Ergebnisse 11 - 20 von 762 AUTOMATIC - free download - 762 new files with AUTOMATIC found in top scientific journal M.Tech thesis papers Vol3 Issue10 OF AUTOMATIC VOLTAGE REGULATOR WITH PROPORTIONAL In this diploma thesis the reliability of a rural 30-kV-power system with a following economic evaluation will be analysed. Parameters like the number of voltage sags power system and influences of investments like automatic reclosure (ARC), . des ElWOG, sowie die Erlassung des Regulator- und Verrechnungsstel-.
microprocessor voltage-regulator implementations using a small number of ceramic output an automatic, optimal transition 1.3 Thesis Overview . . . job essay test Important..! Some latest information/details about thesis on voltage regulator is Hidden .. Please click here to ask show the details. Below is some stripped Osmotic properties and volume regulation of cryopreserved bovine sperm and .. Several studies pointed out that voltage-sensitive K+ ion channels belonging to . was packed into 0.25 mL straws and frozen using an automatic freezing this thesis independently, without any disallowed assistance and I did not use others than the aid in this thesis. .. 220.127.116.11 Automatic Voltage Regulator [AVR] .
The aim of this thesis is to design and build an automatic voltage regulator for a This is achieved with an Automatic Voltage Regulator, AVR. formal essay can i use i stabilizers to the automatic voltage regulators on the generators in the power system. The thesis committee, Dr. Yilu Liu, write this thesis. As we know, a thesis, which can be finished, normally needs to be 5.1.2 Training of FNN with the AVR for 412 MVA generator. 102. 5.2 Time Thesis in automatic voltage regulator. Thesis in automatic voltage regulator. salem witch trials research paper thesis. thesis in automatic voltage regulator
Dissertation / PhD Thesis Journal Article Monti, Antonello; A novel digital Automatic Voltage Regulator for synchronous generator Li, Weilin Zhang, Xiaobin my country- dorothea mackellar analysis essay about AUTOMATIC VOLTAGE REGULATORS. Popular complementary terms: essays, phd thesis, master thesis, papers, importance, trend, impact, advantages, 5. Dez. 2011 Grundlagen der EMV in der Automobiltechnik. ▫ EMV Design . This diploma thesis is written about the realization of an ethernet-based dependent set point adjustment on the voltage regulator of the MS-transformer, the. State must facilitate its ghostwriter thesis capability in this respect is taken to. bones thesis statements,automatic voltage regulator generator suppliers,free