GOST 2.731-1981
Unified system for designe documentation. Graphic identifications in schemes. Electronic tubes and valves

Standard No.

GOST 2.731-1981

Release Date

1981

Published By

RU-GOST R

Status

Be replaced 1988-01

Replace By

GOST 20731-1986

Latest

GOST 28731-1990

Scope

This standard establishes conventional graphic symbols for electrovacuum devices and applies to circuits performed in

GOST 2.731-1981 history

• 1970 GOST 28731-1990 Poultry. Zootechnical requirements for keeping of broilers
• 1986 GOST 20731-1986 12,7 mm wide 9-track magnetic tapes recorded at 63 bit/mm phase encoded. Specifications
• 1981 GOST 2.731-1981 Unified system for designe documentation. Graphic identifications in schemes. Electronic tubes and valves
• 1977 GOST 22731-1977 Data transmission systems. Basis mode control procedures for data communication systems using semiduplex mode of information exchange