SU1350814A1 - Annular frequency converter - Google Patents

Abstract

Invention m. used in multichannel transmission systems. The purpose of the invention is to improve the accuracy of conversion while reducing the requirements for the selection of transistors. The device contains transistors 1-45 resistors 5 and 6, dif. transformers 7 and 8, output diff. transformer 9 containing the primary winding consisting of two half-windings 10 and 11J and secondary winding 2, capacitors 13 and 14, notch filter 15, sources 16 and 17 of the converted signals — input and local oscillator, respectively. 1 il. "-0 SB SP 12

Description

This invention relates to; -. pazm about technology and can be HcnojTbj OBc iiiO p. G-channel systems rtepertaqH,

The purpose of the invention is by: higher than the conversion accuracy while reducing the requirements for the selection of a transistor,

In the drawing, an electrical schematic diagram of a right / right frequency converter is shown.

Ring frequency converter contains transistors 1-4, the first 5 and the second 6 resistor. the first V and the second 8 differential transformers, the differential trick; a transformer 9 containing the primary winding, consisting of two semi-windings 10 and P, and the secondary; the second winding 12, the first 13 and the second capacitors, notch filter 15 , 16 and 17 stop transforms 1; | x the input signal and the local oscillator signal, respectively,

Ring transducer h; sgotti works as follows,

The source 16 controls the opening and closing process by means of the third-half semi-winding of the first differential transformer: wiring 1 pair of transistors 1, 2 and 3 ,, 4 into a composite; - the body half-period is opened by transistors 1 and Zj; 7 rasistors 3 and + are locked; and in the negative half-period, vice versa). The current from the source of the G / converted signal to the output of the color converter transits during both half-periods of the input signal l;: - la “At the same time, the positive signal of the current NpeO SpasytiMoro signal to the output of the ring-type driver passes the following way, the source 7 of the signal being converted by means of the left-hand half-winding differential transformer 8 is supplied in phase to kg-zhdog-G; - the open transistor and 2 to the emitter-base section and in these transistors the base currents flow in .cl transistor 1 - emitter Zisgor 5 ,, left according to the half-winding scheme of the differential transistor 8p obta pshgza ,, top according to the half-winding scheme of the differential transformer 7 and the base; for transistor 2 - emitter j, resistor 6, lrva according to the phmgo-winding scheme of the differential transformer, common bus, lower according to the semi-system ™ scheme of the differential transformation hank, b.

.) Ry and Irr Chem Base; due to orOj that) aiz1:; c1 oors 1 and 2 have an impedance structure. the base current of the razistor I ,,); for example, increase; - the magnitude of the transistor of the resistor 2 decreases as “R corresponding to the basic gokamk in the 7p 1zistor of the collector

signal according to p. m: for transit: stor 1 - collector 5 semi-winding 10 bbixonnoro / iffer of a nitsialny transformer, S, cond, sensor 13, rezhektorggey filter 15 (which roti gle - a signal is not enough) ,, common ii (a, li; va according to the loluopMO scheme Gka differential; ialg; th transformer 8, PJ ;, is the source of Tj and zmitter; for transistor 2, cog; lek g; Psioobmotka I i output O D1 : ffer "Ndialny transformer 9, capacitor -: -,. Notch fi.ltr 13j is common 3 in. left according to the scheme-- f --- d gto.poobmotka differential} Wow -; ransf Srmatpra 8 resistor 6 and zmitter ,, rokhod through the half windings 10 and P, D) d; -: number :: ectga, 1e, currents to transform the signal at MariiisTonpo- GUD1: (differential personal: - |) Ansformats, 9 d: e magnet flow. Reprogramming the number of magnetic accesors to determine; - changes and counts. -And; ktsrn x tokoz p: lnz n S Orov. Su: 1ued ::: piezo O, h-: s, ui; ktir | (si transistor current 1, ej: H44Baei-CK, and trans ™

.-iiiCTOiia 2 C AND 1: pae-1h; in with the correspondence of g: with the base eyes of the PS to the newly created SignalJ, magician; 1tny (:: flows of currents; 1y and -; et g: roti1,011o: -: ozh1; -: e) avera-: en ;: || but so ka; iolobotgga-: 10 and

i i included rest; eni; o each other rv then these b: AG; I1-ni flows P:; imagined about, savage and directions, and therefore, & C, 1 and lead Sum-marnuk) E.C. NA) vgor-1h ;; 6th winding 2

(Output winding: ,,, as rebuy with ryiH of the converted signal,

In ИrI1; at; - lhk: th half-period for example - to ".nk 1) Stroke} 1s: about current passing 1.:re-Orb.::1 ism C signal, pa rhoiskhodktov analogs h shlm sbr-aeom ,, Difference ccsp-yuchayatsya in-th, with this C-chuchae in the work of Ihohop, ts instead of the left side of the line, transceiver 8 m instead of transistors 1

and 2 open transistors: 3 and 4, which provides two-frequency conversion frequency.

High degree of compensation of mag-and-it notes (balancing)

The input signals at the output of the proposed ring converter and, consequently, high conversion accuracy are achieved as follows. In the positive half-period, the voltage of the source 10 through the secondary half-windings of the differential transformer 7 is fed in opposite phase to each transistor i and 2 to the base-emitter section, B these transistors flow the base currents for the input signals in the following circuits: for transistor 1 - emitter, resistor 5, left - according to the half-winding circuit of the differential transformer 8, common busbar, top scheme poluobmotka differential transformer 7 and the base; for transistor 2 - the base, the bottom half-winding of the differential transformer 7, the common bus left by the half winding of the differential transformer 8, the resistor 6 and the emitter. At the same time, both transistors are open and their base currents increase. In accordance with the base currents in these transistors collector currents flow for input signals along the circuits: for transistor 1, the collector is half-winding 10, capacitors 13 and 14 are half-winding 11, open collector-emitter junction 2, resistors 6 and 5 and the emitter of transistor 1; for transistor 2 - emitter j resistors 6 and 5, open junction emitter - collector of transistor I, semi-winding 10, capacitors 14 and 13, semi-winding 1 1 and call: ktor transistor 2 The collector currents of both transistors do not flow through the notch filter 15, because resistance of the filter filter 15 is large and the middle point of the capacitors 13 and 14 and the common busbar are open for the input signals. Moreover, the collector currents of the transistors in accordance with the base current of the carrier current increase and also are consistently common to both transistors. Passage through the primary half windings 10 and 11, connected in opposite, successively collector current creates in the half windings 0 and 11 equal, but oppositely directed magnetic fluxes and therefore, as a result of compensation of magnetic fluxes, there is no input signal at the output of the ring converter. If transistors

five

0

1 and /. not identical in their parameters or vary due to any destabilization of their factors, the high degree of compensation of magnetic flux is not disturbed, the collector current of the input signals flows sequentially through the oppositely connected primary half windings 10 and 11 of the output differential transformer 9, where it creates a mutually compensated - ru1.1V1e magnetic fluxes.

In the negative half-period of the current input signals, the compensation process is similar to that described, only instead of transistors 1 and 2. which are locked in this half-period, open transistors 3 and 4 participate in the work and

and 6, included in the transistors p each stabilizing,

Resistors 5 are a pair of emitter pairs, are

25

0

five

0

five

0

five

Claims (1)

Invention Formula An annular frequency converter containing the first differential transformer, the primary winding of which is the input of one of the converted signals, and the secondary winding is made in the form of two half windings j included according to, the connection point of the end of the first half winding and the beginning of the second half winding , while the bases of transistors of different pairs are combined in pairs and connected to the beginning at the first and the end of the second semi-winding of the secondary winding of the first differential transformer accordingly, the emitters of the transistors of each pair of transistors are interconnected via serially connected first and second resistors, with the secondary winding of the second differential transformer, the primary winding of which is the input of the second transformed signal, being connected between each pair of transistors; This secondary winding of the second differential transformer is made in the form of two according to the included1.1X semi-windings, the connection point of which is A common bus is connected to the output differential transformer and power supply, characterized by 4TOj in order to increase the conversion accuracy during the cutting and selection requirements for the transistor, the winding of the output dcd is transformed into two different types: the semi-windings, between the ends of which are connected in series the first and second capacitors I whose connection points are connected to the common bus through an input rhidge filter, and the source is made with Editor About Golovach Order 5297/56 Compiled by A Menshikov Texpei I Popovich Correct Circulation 900Po.Clisnoe VNII1Sh G of the USSR State Committee for inventions and discoveries 13C) 35j, Moscow e Zh-35 ,, Raup1ska nab ,. d 4/5 Production and printing enterprise, 14 two isolated poles, which are connected to the ends of the corresponding RyronjHX semi windings of the secondary winding of dffsreren 1, and of a transformer, each transistor having a opposite structure in each pair of transistors; semi-magnet ™ current of the secondary winding of the output, differential transmission transformer, Uzhgorod. ; L „, Project, 4