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A “Scale-of-two” High-Speed Counter Using Hard Vacuum Triodes

Published online by Cambridge University Press:  24 October 2008

W. B. Lewis
W. B. Lewis
Affiliation:
Gonville and Caius College
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Extract

A high-speed recording counter circuit is described which has proved very reliable. The basic circuit element employs two triodes in a symmetrical circuit which has two stable conditions. The circuit is triggered alternately from one stable state to the other by the applied impulses acting through a circuit comprising two “Westector” cuprous oxide rectifiers and an inductance.

It is easily possible to make a counter operate accurately at a speed of 20,000 random impulses a minute, provided that the associated recording meter operates in less than 1/100 sec.

A “watch-dog” thyratron recording circuit is also described. This is useful where the slow speed of the mechanical recording meter would introduce loss.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 33 , Issue 4 , October 1937 , pp. 549 - 558
Copyright
Copyright © Cambridge Philosophical Society 1937

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References

* Wynn-Williams, , Proc. Roy. Soc. A, 136 (1932), 312.CrossRefGoogle Scholar

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* For a recent bibliography see Starr, A. T., Wireless engineer, 12 (1935), 601.Google Scholar

* Lewis, Proc. Camb. Phil. Soc., loc. cit.

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* Standard Telephones, type 4007J.

* Wynn-Williams, Brit. Pat. No. 421341.

† Neher, and Harper, , Phys. Rev. 49 (1936), 940.CrossRefGoogle Scholar