DE350507C - Device for photoelectric alkali metal cells - Google Patents

Device for photoelectric alkali metal cells

Info

Publication number
DE350507C
DE350507C DENDAT350507D DE350507DD DE350507C DE 350507 C DE350507 C DE 350507C DE NDAT350507 D DENDAT350507 D DE NDAT350507D DE 350507D D DE350507D D DE 350507DD DE 350507 C DE350507 C DE 350507C
Authority
DE
Germany
Prior art keywords
resistance
photoelectric
alkali metal
cell
metal cells
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DENDAT350507D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of DE350507C publication Critical patent/DE350507C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/14—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for

Landscapes

  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Description

sehen der Kathode k und dem Gitter g des Elektronenrelais in der Brücke die Potentialdifferenz Null, es fließt also über den Nutzwider-the cathode k and the grid g of the electron relay in the bridge see the potential difference zero, so it flows over the useful resistance

ao stand R unter dem Einflüsse der Anodenbatterie α der »Nullstrom« des Elektronenrelais. Im unbelichteten Zustande der Zelle Z ist ihr Widerstand gegenüber W3 praktisch unendlich, die ganze Spannung V liegt εη Z, und es liegtao R was under the influence of the anode battery α the "zero current" of the electron relay. In the unexposed state of the cell Z , its resistance to W 3 is practically infinite, the entire voltage V is εη Z, and it is

bei den gezeichneten5 Verhältnissen am Gitter g with the 5 drawn ratios on the grid g

eine negative Spannung von der Größe —.a negative voltage of the size -.

Aus der bekannten Charakteristik des Elektronenrelais (Abb. 2) entnimmt man, daß die Wider-Standsänderungen der Zelle maximal im Anodenstrom zur Geltung kommen, wenn die Spannungsänderungen am Gitter g sich im schraffierten Teil der Abb. 2 bewegen, d. h. solange sie sich auf dem gradlinigen Ast der Kurve befinden. Daraus ergibt sich, daß der auslaufende Teil der Kurve nicht durchlaufen werden, oder anders, daß der Widerstand der Zelle über- eine bestimmte Größe nicht hinauswachsen soll.From the well-known characteristics of the electron relay (Fig. 2) it can be seen that the resistance changes of the cell are maximally effective in the anode current when the voltage changes on the grid g move in the hatched part of Fig. 2, i.e. as long as they are on the straight branch of the curve. It follows from this that the end of the curve is not traversed, or otherwise, that the resistance of the cell should not grow beyond a certain size.

Erfindungsgemäß geschieht die.s durch Bestrahlen von Z mit konstanter Strahlungsenergie von solcher Größe, daß ein genügend kleiner Anfangswiderstand der Zelle erreicht wird. Dies kann geschehen durch Anbringen einer besonderen Bestrahlungsvorrichtung, von weleher die zusätzliche konstante Strahlung aus einer andern Raumrichtung auf die Zelle geworfen wird. Es kann aber auch die zusätzliche Strahlung mittels Spiegel dem veränderlichen Strahlenbündel oder der von der Zelle absorbierten Strahlung überlagert werden. In diesem Falle kann die konstante Zusatzbelichtung durch Abspaltung von der Hauptlichtquelle erzeugt werden. Schließlich kann auch die veränderliche Strahlungsquelle eine konstante Strahlungsintensität in sich überlagert enthalten.According to the invention, this is done by irradiating Z with constant radiation energy of such magnitude that a sufficiently small initial resistance of the cell is achieved. This can be done by attaching a special irradiation device from which the additional constant radiation is thrown onto the cell from a different spatial direction. However, the additional radiation can also be superimposed on the variable beam or the radiation absorbed by the cell by means of a mirror. In this case, the constant additional exposure can be generated by splitting off from the main light source. Finally, the variable radiation source can also contain a constant radiation intensity superimposed on it.

P ATEKT- Ansprüche :P ATEKT claims:

1. Einrichtung für lichtelektrische Alkalimetallzellen, dadurch gekennzeichnet, daß außer der veränderlichen, die Photoströme steuernden Strahlungsenergie noch eine zweite konstante Strahlungsquelle die Zelle bestrahlt, zu dem Zweck, einen günstigsten mittleren Widerstand der Zelle herzustellen.1. Device for photoelectric alkali metal cells, characterized in that in addition to the variable radiation energy controlling the photocurrents, another second constant radiation source irradiates the cell, for the purpose of providing a favorable Establish average resistance of the cell.

2. Einrichtung für lichtelektrische Alkalimetallzellen nach Anspruch r, dadurch gekennzeichnet, daß die konstante Zusatzstrahlung der veränderlichen Strahlungsenergie überlagert ist.2. Device for photoelectric alkali metal cells according to claim r, characterized in that that the constant additional radiation is superimposed on the variable radiation energy.

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

In verschiedenen Schaltanordnungen, in denen die Widerstandsänderungen einer lichtelektrischen Zelle unter dem Einfluß veränderlicher, von ihr absorbierter Strahlungsenergie benutzt werden, ist es von Wichtigkeit, die Widerstandsschwankungen in einer ganz bestimmten Größenordnung zu halten.In various switching arrangements in which the changes in resistance are a photoelectric Cell used under the influence of variable radiant energy absorbed by it it is important to keep the resistance fluctuations in a very specific order of magnitude to keep. Bildet z. B. die Photozelle Z den einen Widerstandszweig einer Brückenschaltung in welcher ίο w3 ein Widerstand von der Größe z. B. von io bis 50*106 Ohm und W1 und w% zwei weitere hochohinige Widerstände sind, so ist bei einer bestimmten Belichtung das Verhältnis des Eigenwiderstandes der Zelle zu W3 gleich dem Verhältnis —. In diesem Falle herrschte zwi-Forms z. B. the photocell Z the one resistance branch of a bridge circuit in which ίο w 3 a resistor of the size z. B. from io to 50 * 106 ohms and W 1 and w % are two other high-level resistances, the ratio of the inherent resistance of the cell to W 3 is equal to the ratio - for a certain exposure. In this case there was between
DENDAT350507D Device for photoelectric alkali metal cells Expired DE350507C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE350507T

Publications (1)

Publication Number Publication Date
DE350507C true DE350507C (en) 1922-03-21

Family

ID=6262516

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT350507D Expired DE350507C (en) Device for photoelectric alkali metal cells

Country Status (1)

Country Link
DE (1) DE350507C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124749B (en) * 1956-02-21 1962-03-01 Ibm Deutschland Arrangement for mapping and evaluating recording media

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124749B (en) * 1956-02-21 1962-03-01 Ibm Deutschland Arrangement for mapping and evaluating recording media

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