Accession No

2027.1

Brief Description

valve, 1/2 20th Century

Origin

Maker

Class

physics (?)

Earliest Date

1900

Latest Date

1950

Inscription Date

Material

metal (brass, white metal (at least three types), copper); glass; paper

Dimensions

length 340mm; breadth 125mm; depth 90mm

Special Collection

Cavendish collection

Provenance

Transferred from Cavendish Laboratory, University of Cambridge, 1974.

Inscription

‘VT98 P
APPROX.
8.2 - 750
10E/224’ (paper label)
‘R.F.
PULSE
TRIODE’ (paper label)
‘CONSTANT
CURRENT
OPERATION
35 AMPS’(paper label)

Description Notes

Glass cylinder with metal ends (one end white metal with two protruding pins, the other end brass with ventilation holes). Main part of valve contained within the glass cylinder, with some parts of the metal coated in a copper-coloured paint (or copper itself).

Condition good; complete.

References

Events