Mullard EL38 Radio Valve

SC Mullard EL38 box & valve No. 357 (1).JPG
SC Mullard EL38 box & valve No. 357 (2).JPG
SC Mullard EL38 box & valve No. 357 (4).JPG
SC Mullard EL38 box & valve No. 357 (7).JPG

Title

Mullard EL38 Radio Valve

Subject

Valves

Description

Mullard EL38 valve

The EL38 was designed as a television line output stage valve in the late 1940s. In the early days of CRT based television the tubes could have been either electrostatic or magnetic deflection. The EHT supplies were probably derived from special mains transformers and ran at about 10 - 14 kV. Thus the line output valve was not as heavily stressed as later types had to be.

The EL38 was designed to withstand a positive anode surge of 8,000 Volts and in addition to the 25 Watt anode dissipation the screen grid was wound to withstand a dissipation of 8 Watts. The cathode is oval, and the ceramic insulators are clearly visible.

The classic envelope is 41 mm in diameter and, excluding the IO base pins, is 115 mm tall. http://www.r-type.org/pdfs/el38.pdf

Creator

Mullard

Source

Mullard

Publisher

Mullard

Date

1940's

Contributor

Mullard

Rights

Mullard

Relation

Museum Catalogue No. 357a

Format

5.6 x 16 x 5.4 cm

Language

English

Identifier

Museum Catalogue No. 357

Coverage

UK
Europe