Universal vade-mecum; electronic tubes and semiconductor elements by Piotr Mikołajczyk

The catalogue includes the tubes and semiconductor elements manufactured all over the world.

Tubes and semiconductor are classified in 637 groups comprising tubes and semiconductor elements of identical or similar parameters.

The following data are given in each of these groups:

1) rated values of electric parameters and relative service conditions,
2) equivalent tubes,
3) connection arrangements for the tube sockets,
4) some characteristics of the tubes, typical for each group,
5) operating conditions for the most up-to-date tubes.

In order to help the user make the right choice of a tube for a definite purpose, all items have been additionally arranged in groups according to their characteristic parameters.

The designations of the tubes and semiconductor elements are printed in three kinds of type:

1) italics — for tubes of old design, and tubes with changed type number,
2) Roman type — for tubes and semiconductor elements now in common use,
3) boldface type — for tubes of latest design.