A Survey of the Limits in DC Amplification

Author

Verhagen, C.M.

Author_Institution

Electronics Div., Technical Physics Dept., of the Central National Council for Applied Scientific Research in the Netherlands (T.N.O.)

Volume

41

Issue

5

fYear

1953

fDate

5/1/1953 12:00:00 AM

Firstpage

615

Lastpage

630

Abstract

The influence of a cathode temperature change of planar diodes and triodes is calculated with the help of extended Langmuir tables. The possibility of compensation of this temperature effect is considered. Two units with a common cathode sleeve show no conclusive improvement in cancellation of the heater effect. The disturbance voltage as a result of anode voltage changes is investigated. Some new compensating circuits are presented, resulting in dynamic and in-phase balance simultaneously for a single adjustment. It is found that for all balanced circuits the stability demand for the supply or auxiliary voltage is nearly the same. The change of tube "constants" with time and the relation between anode current and flicker effect attenuation is investigated. It was observed that the poorly defined position of the heater in the cathode sleeve seriously limits tube stability.

Keywords

Anodes; Attenuation; Cathodes; Circuit stability; Diodes; Physics; Space charge; Temperature; Voltage fluctuations;

fLanguage

English

Journal_Title

Proceedings of the IRE

Publisher

ieee

ISSN

0096-8390

Type

jour

DOI

10.1109/JRPROC.1953.274403

Filename

4051358