1963
Start of construction of "Preobrazovatel" plant
1967
First semiconductor elements VK-2-200, VKDU-150 manufactured
1968
The production of diode devices with avalanche characteristics for currents of 200A is mastered
1969
Serial production of small-sized triacs with bipolar control and increased dynamic characteristics has begun.
1971
The improvement of the design and production technology of diodes, thyristors and triacs of the low-amperage series - for currents from 10 to 80 A has been started.
1973
A series of thyristors T10 and T11 has been developed for currents of 10-80 A and voltage up to 2.2 kV. Triacs for currents of 10-80A and switching voltage of 1500V have been started production.
1975
- A series of thyristor optocouplers for currents from 10 to 320 A has been developed.
- The production of thyristors of the T10, T11 series for currents of 10-80 A with a switching voltage of up to 1200 and 2000V has been mastered;
1977
A series of VL10 and B10 diodes with avalanche and non-avalanche characteristics for currents from 10 to 80 A was created.
1979
The production of a series of pin thyristors for currents of 10-12.5A and voltage of 100-2000V has been mastered.
1982
The production of a series of pin optical thyristors for currents of 25-80A and voltage of 200-1200V has been mastered.
1983
The production of a series of pin symmetrical thyristors for currents of 10-80A and voltage of 100-1200V has been mastered
1984
The production of a series of symmetrical thyristors in a sealed plastic case for currents of 10-16A and voltage of 100-1000V has been mastered.
1986
The production of a series of thyristors in a sealed plastic case for currents of 10-12.5A and voltage of 100-1000V has been mastered.
1988
- The production of a series of diode and thyristor modules in case 2 of modification for currents of 25-80A and voltage of 400-1200V has been mastered.
- The production of closing thyristors of the reverse direction for currents of 40-320A and voltage of 400-1400V has been mastered.
1989
- The production of a series of pin optronic symmetrical thyristors for currents of 25-125A and voltage of 200-1200V has been mastered.
- The production of Photothyristors for currents of 25A and voltage of 600-1000V has been mastered.
1991
- The production of a series of diode and thyristor modules in housing 4 modifications for currents of 25-100A and voltage of 200-1600V has been mastered.
- Asymmetric fast-acting thyristor for currents of 16A and voltage of 600-1400V.
1992
The production of a series of pin frequency diodes for currents of 25-100A and voltage of 200-2400V has been mastered.
1994
The production of frequency diodes in a sealed plastic case for currents of 10-16A and voltage of 200-1200V has been mastered.
1997
- The production of a series of thyristors in pill cases with currents of 200-2500A and voltage of 200-1800V has been mastered.
- The production of a series of pin optotiristors for currents of 10-100A and voltage of 100-1800V has been mastered.
- The production of a series of optronic symmetric thyristors in a plastic case for currents of 10-80A and voltage of 100-1200V has been mastered.
1998
- The production of a series of optoelectronic thyristors in a plastic case for currents of 10-80A and voltage of 100-1200V has been mastered.
- The production of diodes for tension forming with currents of 20-32A and voltage of 100-400V has been mastered.
- The workshop of semiconductor devices was separated into a separate enterprise "Element-Converter".
2000
A shunting diode block has been developed to prevent self-induction in the electrical equipment systems of grain harvesters.
2001
- The production of a series of modules from the city hall with a scheme for currents of 10-32A and voltage of 100-1200V has been mastered.
- The production of a series of diodes in pill housings for currents of 1600-5000A and voltage of 1200-4400V has been mastered.
- The reverse control panel of the inclined chamber for current-powered grain harvesters has been developed.
- An internal combustion engine air filter clogging alarm for currents has been developed.
2002
- The production of a series of frequency diodes in a plastic case for currents of 5-80A and voltage of 200-1200V has been mastered.
- The production of a series of diode and thyristor modules in housings 6, 6.1, 8 modifications for currents of 100-250A and voltage of 200-1800V has been mastered.
- The production of a series of diodes in a plastic case for currents of 10-100A and voltage of 400-1600V has been mastered.
- The production of a series of thyristors in a plastic case for currents of 6.3-125A and voltage of 200-1200V has been mastered.
- The production of a series of thyristors in disc type cases for currents of 200-4000A and voltage of 200-4400V has been mastered.
- The production of a series of thyristors in disc type cases for currents of 6.3-100A and voltage of 200-1600V has been mastered.
2003
- The production of potential and potential-free triac modules in housing 4 modifications for currents of 50-160A and voltage of 200-1200V has been mastered.
- The production of modules with a counter-parallel circuit for currents of 80-125A and voltage of 400-1200V has been mastered.
- The production of triac modules in housings 4, 7, 8 modifications for currents of 10-160A and voltage of 200-1200V has been mastered.
- The production of hybrid triac modules in housings 4, 7, 8, 11, 15 modifications for currents of 10-250A and voltage of 400-1200V has been mastered.
2004
- A series of radiators for semiconductor devices of various configurations has been developed.
- The production of series of diodes and avalanche diodes in disc type cases for currents of 320-4000A and voltage of 400-4400V has been mastered.
- The production of a series of pin fast-recovery diodes for currents of 5-100A and voltage of 200-2400V has been mastered.
2005
The production of a series of pin symmetrical thyristors for currents of 100-1000A and voltage of 200-1800V has been mastered.
2006
- The production of a series of diode and thyristor modules in housing 5 modifications for currents of 25-80A and voltage of 200-1600V has been mastered.
- The production of series of diode and thyristor modules in housings 9, 10 modifications for currents of 200-320A and voltage of 400-2800V has been mastered.
- The production of a series of pin diodes for currents of 80-500A and voltage of 400-2800V has been mastered.
- The production of a series of pin thyristors for currents of 125-320A and voltage of 600-2000V has been mastered.
2006
- The production of series of diode and thyristor modules in housings 12, 13, 14 modifications for currents of 500-1250A and voltage of 400-3200V has been mastered.
- The production of a series of diode and thyristor modules in housing 7 modifications for currents of 10-25A and voltage of 200-1200V has been mastered.
- The production of a series of optronic symmetric thyristors in a plastic case for currents of 5-80A and voltage of 100-1200V has been mastered.
- The production of a series of high-speed thyristors in pill housings for currents of 125-1000A and voltage of 400-1600V has been mastered.
2012
The production of a series of fast-recovery diodes in pill housings for currents of 250-400A and voltage of 400-3600V has been mastered.
