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Патент USA US2126067

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ÄW- 9» w33# i ~
H WALTER
,
3,126,053
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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.
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