SU631859A1

SU631859A1 - Multichannel comparator

Info

Publication number: SU631859A1
Application number: SU752300899A
Authority: SU
Inventors: Сергей Викторович Сорвирог; Дмитрий Васильевич Солодов; Дмитрий Васильевич Бальмаков
Priority date: 1975-12-22
Filing date: 1975-12-22
Publication date: 1978-11-05

Description

(54) МНОГОКАНАЛЬНЫЙ КОМПАРАТОР(54) MULTI-CHANNEL COMPARATOR

1one

Изобретение относитс к электроизмерительной технике, может быть использовано дл построени многоканальных преобразователей напр жение- код с последовательным опросом измер емых напр жений .The invention relates to electrical measuring technology, can be used to build multi-channel voltage transducers — a code with sequential polling of measured voltages.

Известен многоканальный. компаратор, содержащий блокинг-генератор, начало обмотки положительной обратной св зи которого объединено с концом обмотки отрица тельной обратной св зи и через резистор подключено к общей шине, коммутирующую чейку в каждом из каналов на ключевом транзисторе, коллектор которого через резистор подключен к шике источника питани , а база - к соответствующему выходу распределител импульсов, и источник эталонного напр жени ГО.Known multichannel. a comparator containing a blocking generator, the start of the positive feedback winding of which is combined with the end of the negative feedback winding and connected through a resistor to a common bus, switching cell in each of the channels on the key transistor, whose collector is connected to a power source through a resistor , and the base to the corresponding output of the pulse distributor, and the source of the reference voltage GO.

Однако этот компаратор имеет недостаточное число каналов.However, this comparator has an insufficient number of channels.

Цель изобретени - увеличение чис а каналов компаратора.The purpose of the invention is to increase the number of channels of the comparator.

Дл этого в многоканальном компараторе , содержащем блокинг-генератор, на-, чало обмотки положительной обратной сэ -To do this, in a multichannel comparator containing a blocking generator, at the beginning of the winding of the positive reverse se -

аи которого объединено с концом обмотки отрицательной обратной св зи и через резистор подключено к общейшине, коммутирующую чейку в каждом из каналов на ключеёом транзисторе, коллектор которого через резистор подключен к шине источника питани , а база - к соответствующему выходу, распределител импульсов, и источник эталонного напр жени , в коммутирующую чейку каждого из каналов введен первый дополнительный транзистор, база которого соединена с коллектором ключевого транзистора, а коллектор соединен с одним входом многоканального компара тора, эмиттеры первых дополнительных Which is combined with the negative feedback winding end and connected to a common bus through a resistor, a switching cell in each of the channels on the key transistor, the collector of which is connected to the power supply bus through a resistor, and the base to the corresponding output, pulse distributor, and reference source voltage, the first additional transistor is introduced into the switching cell of each channel, the base of which is connected to the collector of the key transistor, and the collector is connected to one input of a multichannel comparo of the torus, the emitters of the first additional

5 транзисторов всех коммутирующих чеек объединены и подключены к началу обмо1 ки отрицательной -обратной св зи, а конец обмоткиположи тельной обратной св зи подключен к эмиттеру вгорого дополнительно0 го транзистора, коллектор которого подключен к шине питани , а база - к источнику эталонного напр жени .5 transistors of all switching cells are combined and connected to the start of the negative-feedback connection, and the end of the winding of the positive feedback is connected to the emitter of the additional transistor, the collector of which is connected to the power supply bus, and the base is connected to the reference voltage source.

Claims

. The drawing shows a diagram of the comparator. The multichannel comparator contains switching cells 1 - i g, each of which includes, respectively, 2–2 key transistors and Z.i and Zp transistors, a 4-pulse distributor, a source of 5 reference voltage, a block-generator 6, and a transformer with winding 7 positive reverse connection and winding 8 negative feedback, resistor 9 and transistor 10, wipes collectors 5 - 3 fi connected to the corresponding inputs of the comparator, the emitters are combined and connected to the beginning of the winding 8, the end of which and the beginning of the winding reziogor and 7 through 9 are connected to a common bus, and the end of the winding 7 is connected to the emitter of transistor 1D, whose base is connected to iotochniku 5 and the collector - to the power bus. The bases of the transistors 3–3 are connected to the collectors, respectively, of the transistors 2–2ft, whose emitters are connected to the common bus and the bases; combined and connected to the distributor 4. The device works as follows. When the closing pulse arrives from the distributor 4 at the base of the transistor 2f of the cell 1, it closes. The current through the base-collector junction of transistor 3 (depends on the potential of the measured voltage, the other part of the current from the power bus flows through the base-emitter junction. If the potential of the base of transistor 1O is such that its emitter current is less than the emitter current of transistor 3, in standby blocking negative feedback prevails in generator 6 and it does not generate. If the potential of transistor 1O base potential causes the emitter current to be larger than the emitter current of transistor 3, positive feedback prevails in generator kine 6 and it produces oscillations The increase in the number of measured voltages is achieved by the fact that at the moment of formation of a pulse, the blocking by the generator 6 apr on the winding 7 is such that it causes the base – emigr transitions to close all additional transistors 3 y - 3 and the load for the winding 7 is rotary and is determined by the emitter base junction and source 5. Claims of the inventions Multichannel comparator containing a blocking generator, the beginning of the winding of which positive feedback is combined with the end of the negative feedback winding and through a resistor A common bus, a commuting cell in each of the channels on the key transistor, whose collector is connected via a resistor to the power supply bus, and the base is connected to the corresponding output of the pulse distributor, and the reference voltage source, in order to increase the number of channels , the first additional transistor is inserted into the switching cell of each channel, the base of which is connected to the collector of the key transistor, and the collector is connected to one input of a multichannel comparator, emittfi first additional itelnyh switching transistors of all the cells are combined and connected to the top winding of the negative feedback, and the end of winding the positive feedback is connected to the emitter of the second additional transistor having its collector connected to the power bus, and base - to a source of reference voltage. Sources of information taken into account in the examination: 1. Copyright certificate № 327442, G 05 B 1/01, 14.O3.71.

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