SU943824A1

SU943824A1 - Glow thyratron board control method

Info

Publication number: SU943824A1
Application number: SU802966781A
Authority: SU
Inventors: Вероника Рафаиловна Ворончева; Марк Ильич Гельштейн; Юрий Яковлевич Метлицкий; Марклина Григорьевна Чижова
Original assignee: Предприятие П/Я Г-4219
Priority date: 1980-08-01
Filing date: 1980-08-01
Publication date: 1982-07-15

Description

Изобретение относитс к электронной промышленности, а именно к способам управлени табло на тиратронах тлеющего разр да, и может ть использовано в отображении знаковой и графической информации.The invention relates to the electronics industry, and in particular to methods of controlling a display on glowing thyratrons, and can be used in displaying sign and graphic information.

Известны способы управлени многоэлементными табло на тиратронах тлеющего разр да (выполненных либо в виде отдельных тиратронов или мопулей , либо в виде матричных индикаторов f построенных на тиратронах), включающие подде Гжание в тиратроне посто нно гор щего подготовительного разр да,создающего концентрацию зар дов , необходимую дп надежного зажигани тиратронов импульсными напр жени ми , подаваемыми на сетки. Подготовительный разр д в индикаторе поддерживаетс с помощью вспомогательного электрода-катода. Питание катодов тиратронов осуществл ют от источника посто нного напр жени . Запись информации в табло, как правило , производ т по команде из блока управлени путем подачи кодированных управл ющих импульсных напр жений на сеточные шины тиратронов 1.There are known methods for controlling multi-element glow-discharge thyratrons (made either as separate thyratrons or mopules, or as matrix indicators f built on thyratrons), including maintaining a constant-burning preparatory discharge that creates the concentration of charges necessary dp reliable ignition of thyratrons by pulsed voltages applied to the grids. The preparatory discharge in the indicator is maintained by an auxiliary electrode cathode. Thiratron cathodes are powered from a constant voltage source. Information is recorded on the scoreboard, as a rule, produced by a command from the control unit by supplying coded control impulse voltages to the thyratron net buses 1.

Известен способ уп{ авлени таблс на тиратронах тлеющего разр да,There is a method of yup {Alenia Tables on glow discharge tiratrons,

включающий подачу .напр жений на катоды тиратронов и импульсных напр жений на их сетки 2.including the supply of voltages to the cathodes of the thyratrons and pulsed voltages to their grids 2.

Недостатком известного способа вл етс значительное потребление мощности в цеп х катодов как в свет щихс , так и несвет щихс тиратронах за счёт подачи на них посто нного напр жени . Нежелательное большое The disadvantage of the known method is a significant power consumption in the cathode circuits in both luminous and non-luminous thyratrons due to the application of constant voltage to them. Unwanted big

10 потребление мощности вызывает сильный перегрев табло. В результате подобные многоэлементные табло нуждаютс в принудительном охлаждении и специальных конструктивных мерах 10 power consumption causes severe overheating of the board. As a result, such multi-element boards require forced cooling and special design measures.

15 по отводу тепла.15 for heat removal.

Цель изобретени - снижение потребл емой мощности табло.The purpose of the invention is to reduce the power consumption of the board.

Поставленна цель достигаетс тем, что согласно способу управлени The goal is achieved by the fact that according to the control method

Claims

20 boards on glowing thyratrons, consisting in applying voltage to the cathodes and voltage pulses on the Tiratrono grids, periodic pulse pulses of voltage voltage with a period of discharge that does not exceed the deionization time of the cathode gap and single pulse pulses are applied to the cathode cathodes nets synchronized with pulses, for example, neither on the nets of thyratrons. The purpose of periodic voltage pulses I, each of which causes ignition of the preparatory discharge, is to create a charge concentration in the thyratron necessary for reliable ignition of the preparatory discharge by single voltage pulses of the cathodes synchronized with the voltage pulses sent to the grid of indicators. A reduction in the power consumed by the indicators is achieved by reducing the average current of the cathodes as a result of their power supply by pulsed voltage. The amplitude of the cathode voltage pulses corresponds to the rated voltage of the cathodes and ", the adherence t is 1.5-2 times longer than the nominal duration of the control voltage pulses on the grids, and the period of the periodic voltage pulses of the cathodes T are chosen from the condition of small (not more than 10 microns of ignition lag of synchronized voltage pulses of the preparatory discharge. To facilitate the maintenance of the anode discharge (i.e., preservation of the indicator memory), the amplitude of the preparation pulses is sometimes advisable reduce not to zero, but to some residual constant UQ, which, depending on the types of indicators, is minus (50-150) B. The drawing shows a time diagram of the supply voltage of the thyratrons. The cathodes of the indicators with a period T and duration also arrive periodic pulses of voltage U ,. The duration of period T is chosen less than the deionization time of the cathode gap. Therefore, each pulse Un causes ignition of the preparatory discharge and its burning during the time close to T. By beating the voltage pulse arriving at the cathodes, a shorter time than T after the next periodic pulse, the more will lead to the ignition of the preparatory discharge. The pulses of the command to write information to the board cause both cathode voltage pulses synchronized with them and the corresponding control voltage pulses to the grids (Od). As a result, indicators are ignited, on the grids of which a control pulse has been applied. Subsequently, the included indicators, as in the known boards, continue to be illuminated until a damped anode pulse arrives. Claims The control method of a glow-discharge tiratrons display is to apply voltage to the cathodes and voltage pulses to the nets of the thyratrons, characterized in that, in order to reduce the power consumption, the voltage-pulses from the thyratrons are applied to the cathodes. a follow-up period not exceeding the deionization time of the cathode discharge gap, and single voltage pulses synchronized with voltage pulses on the thyratron networks. Sources of information taken into account during the examination 1.Yablonsky F.Ya. Gas dischargers for displaying information. M., Energie, 1979, p. 49.

2. Lisitsyn B.P. Display elements. M., Energie, 1978, p. 92 (prototype).