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INTRODUCTION

ELSIS Inc. was founded in 1971 as an independent electronics & industrial company. Later it joined a larger firm, MIMAS Holding, to enable financing of big projects. In this period, aoutomatic PBX systems, memory telephone systems, servo-regulator systems, uninterruptible power supplies were developed and procured to both civilian and government agencies in and outside Turkey. In particular, Turkish defence ministery and Police Headquartes were supplied with thousands of power units.

Later, static power regulator project was initiated and servo regulator project was terminated. Meanwhile, DC power supplies were designed and produced as a first time. Intelligent DC power supplies have been supplied to firms both in and outside Turkey. In particular, redundant, remote controlled, DC power supplies were supplied to (Turkish Ttate Natural Gas Distribution Agency) BOTAS to be used in natural gas routing and flow control stations.

More recently, custom power supplies designed to work under intense RF fields have been developed and supplied to Communication and Defence industry firms such as TURKCELL, TELSIM AND ASELSAN. These units consists of AC-AC, AC-DC power supplies and DC-AC inverters that satisfy civilian and defence standards.

ELSIS products are proprietary, brand-new and 100% custom designed. Product Systems consist of devices, software and innovative solutions. Generally, microprocessor controlled, user-programmable, efficient systems are developed at any desired AC/DC input-output configurations in the 100VA-400 KVA power range.

Products comply with international civilian or defence standards. High-tech, power electronics products with no moving parts can be produced to be water proof and mechanically robust to withstand harsh conditions in remote areas or in open air. Besides meeting thermal, EMI and RFI standards, systems are designed to withstand mechanical oscillations, impact, humidity and corrosion effects.

User programmable, dependable, power efficient systems that do not radiate noise to the environment in compliance with international standards have been delivered. ELSIS has ISO-2001 management standards and has been a "ISO-9001:2000" certified company accredited by Dutch Certification Company "KEMA" since 1999.

References

Thousands of UPS, regulator and power supply systems produced by ELSIS, in the 2-400 KVA power range are functional in the service of many customers in Turkey. In addition, ELSIS has about 100 power systems installed abroad in countries like Korea, Egypt, Israil, Pakistan, India, Argentina, New Zealand and Saudi Arabia by special request of customers. In summary, ELSIS has a large customer pool of thousands agencies, firms and individuals.

R&D and design work are carried out in sister company,
SARGE Ltd.
A short history of R&D activitiy is summarized as follows;

Laboratory type DC power supplies, (for ministry of education, in particular), relay switched, all solid-state Office-deck Telephone systems. All solid-state, "Fire Alarm Systems" that contained Temperature, Flame and Smoke dedectors with digital and analog design considerations. In order to meet the demand created by energy shortages in Turkey, Electronic AC voltage regulators were designed and produced as first time in 1974.

Later, to answer the requests of industrial firms at higher power lewels, servo-motored, automatic, AC voltage regulators were designed and produced by the thousands. In one instance only, 2000 units were supplied to the Defence ministery in the 5kVA-60 kVA power range.

In 1979 , through a very involved research and development process, a "field pbx telephone system" were designed for an international tender announced by the defence ministery. ELSIS mil-spec product scored 96/100 and was rewarded for being the best among its international competitors in the bid.

ELSIS Inc. employed microprocessor controlled circuit design in its products as a first time, in 1979. The first product in this spectrum was an intelligent "Automatic telephone dialing system" , MAY-99. As an extention, automatic tephone PABX systems were designed later and delivered to customers in 1983 as a first time.

Next, due to high demand from the industry, spread of computer usage and frequent power black-outs in Turkey at the time, the UPS systems were the main focus point of R&D activities. First, 2kVA-10KVA "ELSIS- uP-15" model , later 30 kVA "ELSIS - uP-315" model UPS units were designed and produced.

In 1992 considering the shortcomings of servo systems and customer demands and devolepments in the Solid state electronics, "all solid state" static AC voltage regulators with no moving parts were designed and produced. First, a 180 kVA unit was installed at the radar base of the Navy in the Blacksea region. Through constant research and development, ELSIS-EREG series static voltage regulators upto 600 kVA power, have been in service of customers since then by the thousands both in and outside Turkey.

Later, in order to elliviate problems of power shortages, redundant, dependable DC power supply systems were developed for cable TV firms. These units are still in the service of major cable TV suppliers in Turkey.

With continuing, rigorous R&D efforts, switching power supplies delivering higher powers were produced as stand-alone units, as opposed to parts of larger systems. In 1999, 35 12 V-50A power supply units were delivered to a firm to power illimunated high-way signs .

In 2000 first 24 VDC /120 A parallel and redundunt systems were supplied to BOTAS (Turkish Natural Gas Distribution Company) which was followed by 24 VDC / 1000A redundant systems. In these later units all parameters such as charging voltage, discharging voltage, charging currents, short circuit current, charging time, ect. are controlled and programmed by the user via LCD front panel. These systems have never been serviced for repair since their installation.

Most recently, deliveries to ASELSAN (State Defence Electronics Company) are continuing through various subconracting projects since 2000. Some of these projects are;

Portable intelligent Battery charging unit,
Mil-spec, 28 VDC / 40 A battery charging unit,
Mil-spec, 28 VDC / 120 A battery charging unit,
Mil-spec, 24 VDC / 220 VAC - 50 Hz 1,5 kVA inverter
Mil-spec, 24 VDC / 230 VAC- 50 Hz 1 kVA inverter Avionic,
24 VDC / 230 Vac - 400 Hz 75 VA inverter

Design of new systems and extentions of existing units are continuing through Research and Developement efforts.


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