SU625196A1

SU625196A1 - Temperature control

Info

Publication number: SU625196A1
Application number: SU752180272A
Authority: SU
Inventors: Евгений Григорьевич Левчук; Василий Петрович Шульган
Original assignee: Предприятие П/Я В-8751
Priority date: 1975-10-03
Filing date: 1975-10-03
Publication date: 1978-09-25

Description

Изобретение относитс к радиоэпектронной промышпенности и предназначено дп посто нного пропорционального регулировани температуры радиотехнически термостатов.The invention relates to the radioelectronic industry and is intended for dp constant proportional temperature control of radio engineering thermostats.

Наиболее близким к изобретению по технической сущности вл етс устройство дл регулировани температуры, содержащее последовательно подключенные к источнику питани основной нагреватель и коллектор-эмиттерный переход транзистора и подключенный одним выводом к источнику питани дополнительный нагреватель JLJ.Closest to the invention, in technical terms, is a temperature control device comprising a main heater and a collector-emitter junction of a transistor connected in series to a power source and an additional heater JLJ connected to one power source.

Низка точность этого устройства обусловлена скачкообразным изменением мощности, выдел емой дополнительным нагревателем.The low accuracy of this device is due to the abrupt change in the power given off by the additional heater.

Целью изобретени вл етс повышенив точности устройства.The aim of the invention is to increase the accuracy of the device.

Достигаетс это тем, что оно содержит стабилитрон, . включенный между другим выводом дополнительного нагревател и коллектором траноистора.This is achieved by the fact that it contains a zener diode,. connected between the other output of the additional heater and the collector of the transistor.

На чертеже дана схема устройства дл регулировани температуры.In the drawing, a diagram of a device for temperature control.

Устройство содержит транзистор 1, основной нагреватель 2, дополнительный нагреватель 3, стабилитрон 4 и источ}1ик питани (на чертеже не показан).The device contains a transistor 1, the main heater 2, the auxiliary heater 3, the zener diode 4 and the power source} 1ik power (not shown).

Claims

In one state, transistor 1 is faster} and the heating power of the thermostat is determined mainly by the current of heaters 2 and 3. In the process of regulation, the voltage on the transistor varies from zero to the voltage of the power source depending on the ambient temperature, therefore, it automatically through the Zener diode 4 regulates the current through the auxiliary heater 3. The power dissipated by the heater 3 and the Zener diode 4 also varies depending on the ambient temperature. Zener diode 4 and transistor 1 are structurally located on a common heatsink inside a thermostat. The power dissipated by the radiator, which is considered as an additional load, becomes inversely proportional to the change in the ambient temperature, as a result of which the proportional control mode is stabilized and the accuracy is increased. The use of a zener diode and additional heating of the LPN allowed to reduce the power dissipated by the transistor, to extend the range of operating temperatures (from –6 ° to 1–60 s), to significantly reduce the heating time. Apparatus of the Invention A temperature control device comprising a main heater and a collector-emitter junction of a transistor connected in series to a power source and an additional heater connected to one power source, characterized in that, in order to improve the accuracy of the device, it contains a zener diode connected between output additional heater and collector transistor. Sources of information taken into account in the examination: 1. USSR Copyright Certificate No. 358691, QO5D 23/19, 1971.

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