Патент USA US2126067код для вставки
ÄW- 9» w33# i ~ H WALTER , 3,126,053 mmmmmA ` Filed my .13, im innmiflimnw _ ATTORNEY, Patented Aug. 9, 1938 2,126,067 ’ UNITED -STATI-:s PATENT OFFICE 2,126,057 _ RECTIFIER Hans Walter, Berlin-Siemensstadt, Germany, as signor to Siemens & Halske Aktiengesellschaft, Berlin-Siemensstadt, Germany, a corporation of Germany Application May 13, 1935, Serial No. 21,074 „ In Germany May 16, 1934 V5 Claims. (Cl. 175-366) This invention relates to an improved rectifier deal of trouble-it'would, for example, be feasible ' arrangement especially designed to obtain recti iiers in which separate groups of rectiiìers or to use from a 20-mm. disk with a zero value `R0 of about 700 ohms for a certain circuit scheme, pairs thereof exhibit similar characteristics. For many purposes in electrical engineering, ' say, a modulator and to locate among a large more particularly in the measuring and com- » -number of products a similar diskpresenting a 5 munication arts, itis necessary to make available two or more rectiñer elements presenting like characteristic thatwill deviate but little from the ' other. If, however, instead of the large disk a group of 300’parallel pills is employed 'of which characteristics, say, measuring devices, rectifier Ieach one has an R-value of about 200,000 ohms, bridge arrangements, modulators," andthe like. then, in accordance withknown laws of aver- 10 For instance, in the caseof modulator bridges ages, the group rectiflers will present an error or the suppression of the carrier-frequency at the Vdeviation of ~ output end of the modulator is only possible ifv the 'rectifiers possess suñiciently close character istics. Now, it has been discovered that it is at i. e., 17 times smaller than that of the individu 15 tended with a good deal of difficulty to obtain rec als. For example, if the disks which are to be tiñers as coming from the factory of which two assembled to result in a pair, e. g., of ya modu or more will exhibit identical characteristics, lator, diiTer ori the average by 20% in any kind seeing that there vis found wide divergence in of `properties -at all, then groups` of rectifiers reference to widely varying measuring data of which are composed in accordance with this in- 20 the characteristics. ,For instance, while in some, vention, will merely differ by 1.2%. It is not say, the Ro values may show serious discrepancies, necessary that the-rectifiers should all be con-- it may be the stopping (non-transmissive) or the ' nected in parallel relation to one another; for conductive valuesL that vary greatly in others. it will be evident that parts thereof could be used According to the invention, rectifier arrange- E also in seriation. ' '26 ments, especially with a view to realizing recti 'I'he disposition or assembling of the small rec iiers presenting in pairs or in greater number tifier elements to result in groups may be accom similarv characteristics are obtained, by that each plished in widely varying ways. Inl order that rectifier, especiallyv those of the so-called “dry” circuit (wiring) and solder work may be mini type (cuprous-oxide, etc.) consistsv of a large mized'as much as possible these two exemplified 30 number of paralleled constituent elements ar embodiments of the invention will be found to be rayed in` such a fashion that the characteristic statistically speaking is composed of those of the This invention will be more clearly understood individual or componental elements or elementary by referring to the accompanying drawing in units. These constituent rectifiers according to which Fig. 1 shows a 'cross-section of a parallel 35 the invention arev preferably chosen at randoml arrangement of a plurality~ of copper discs; Fig. 2 from a certain manufacturing series and then is an elevation of a pile of rectifier discs with electrically connectedV together. .'_I'ofbe sure, it connection leads arranged in a group; Fig. 3 is is known from the prior art that relatively great a plan View of Fig. 2. 40 numbers of dry (cuprous-oxide) rectiñer >ele--` Referring now in detail to Fig. 1; copper discs 40 ments (rectifier: “pills”) are connected in seriesy S with a cuprous oxide film may be placed upon and combined to result in piles or columns in or a metallic base plate g which merely forms the der that for the constituent rectifìers a voltage conducting connection.' The second coat could favorable. division may be obtained. By the paralleling of such constituent rectiñers it would, a priori, seem that no success is obtainable inasmuch as the combination of a plurality of` such assemblies would invariably turn out to be more costly than a rectiiier of a correspondingly large surface or ' ~ l , . ` » consist of a metallic ' foil I which is pressure applied upon the constituent disks by the aid of 45 spring cushions 2 consisting o'f rubber, felt, cork, or similar materials. The counter-pressure plate 3, which is preferably screwed , together with the plate g, affords the assembly or combination area. Still, by the paralleling of an assembly of» abase iìrm hold. l » ' `. ~ 50 “pills”, it is feasible to insure rectiiier arrange-v According to Figs. 2 and 3, the pills vare- ar ments and circuits whose characteristics will be ranged to result in a pile, the constituent or. ele- . made similar to a close degree merely by virtue mentary pills s being supported by strips. l. The of statistical averaging of`values. Fundamen pills are always disposed alternately in such a way 55 tally speaking-though this would involve a vgood that pairs of pills are turned towards each other 55 , 2 2,126,067 with their coat or copper face. Between the va rious pills metal coats or leads 4 are provided and group possesses substantially the same electrical characteristics comprising a separate group of. rectiiiers composed of a relatively large number of elements arranged upon a metallic base, a metallic foil located above said base to connect brought out alternately in opposite senses. 'I‘he coats brought out to one side are interconnected electrically, say, by clamps, soldering, or the like. The rectifier arrangement according toA this invention is not restricted in its practical applica-V said rectifier elements in parallel relationship, a rubber cushion member located above said me tallic foil, a pressure plate located above said tion to cuprous-oxide rectifiers, but it may be employed also in connection with other rectiflers, l. say, selenium rectiiiers. Also electrolytic rectiiiers (for instance, dry cells) are susceptible to the advantageous use of the grouping of ele ments, . I claim: Y ` ` 1. A rectiiier arrangement particularly adapted to cuprous-oxide rectiñers having means for 'ob--' taining separate groups of which each separate group possesses substantially the same electrical characteristics, each separate group of rectiiiers comprising a relatively large number of single ~ tainingl separate groups ‘of which each separate . cushion member and clamped to 4said base plate 10 to apply pressure to said single rectiiier units. ,4; A rectifier arrangement particularly adapted to cuprous-oxide rectiflers having means for ob taining separate groups of which each separate group possesses substantially the same electrical 15 characteristics comprising a separate group of rectiiiers composed of a relatively large number of elements arranged upon a metallic base, a me tallic foil located above said base to connect said rectiiier elements in parallel relationship, a cork 20 rectiiier elements arranged on a metallic base, a cushion member located above said metallic foil, metallic foil and resilient means located above said base to connect said rectifier elements in ber and clamped to said base plate to apply pres parallel relationship. 2. A rectifier arrangement particularly adapted to cuprous-oxide rectiilers having means for ob taining separate groups of which each separate group possesses substantially the same electrical characteristics comprising a separate group of rectiiiers composed of a relatively large nu'mber of elements arranged upon a metallic base, a metallic foil located 'above-said base to connect said rectiiler elements in parallel relationship, a spring cushion member located above said metal lic foil, a pressure plate located above said cushion' member and clamped to said> base plate to apply pressure to said single rectiñer units. 3. A rectifier arrangement particularly adapted to cuprous-oxide _rectiflers having means for ob» a pressure plate located above said cushion mem sure to said single rectifier units. 5. A reetiñer arrangement particularly adapted 25 to cuprous-oxide rectiiiers having means for obtaining separate groups of which each separate group possesses substantially the same electrical characteristics comprising .a separate group of rectiñers composed of a relatively large number 30 of elements arranged upon a metallic basel aA metallic foil located above said base to connect said rectiñer elements in pai‘allel relationship, a felt cushion member located above said metallic foil, a pressure plate located above said cushion. 35 member and clamped to said base plate to apply pressure to said single rectifier units. HANS WALTER.