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D2

General-purpose receiving triode for amplification, detection, or low-voltage electronic service as documented by the manufacturer.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: 4
Nominal heater: 3.5 V / 500 mA

Description

Triode vacuum tube documented for receiving and amplification applications, with heater, operating-characteristic, and limiting-rating data extracted from the supplied datasheet.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: -
Base pins: 4
Nominal heater voltage: 3.5 V
Nominal heater current: 500 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances

Plate resistance: 40000 Ω
Transconductance: 0.00025 S
Amplification factor: 10
Max plate voltage: 100 V

Philips D2 directly heated high-vacuum receiving triode for radio detection and RF/AF amplification. Plate operation 40–100 V; detector 40–60 V. Published amplification factor 10, internal resistance minimum 40 kΩ, transconductance maximum 0.25 mA/V. Its published plate voltage range is an operating range, not necessarily an absolute maximum.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

Heater voltage
3.5 V
Nominal
Heater current
500 mA
Nominal

Characteristic

Gloeispanning ¥ =
3.5 v
Published datasheet value
Gloeistroom = ca
0.5 a
Published datasheet value
Anodespanning v, ==
40 v
Published datasheet value
triode) wvoor een
4 v
Published datasheet value
Bij gebruik van een
4 v
Published datasheet value
Philips ontvanglamp D
2 S
Published datasheet value
va =
40 V
Published datasheet value
Gloeispanning . . . . . Ve =
35 v
Published datasheet value
Gloeistroom . . . . .. i = ca
0.5 a
Published datasheet value
Anodespanning . . . . v, =
40 v
Published datasheet value
Verzadigingsstroom . i, =
3 a
Published datasheet value
Ruststroom (max.) . . {da, =
2 a
Published datasheet value
Versterkingsfactor, . . & =
10 W
Published datasheet value
Steilheid (max.}. . .. S_.=
0.25 mA/V
Published datasheet value
Grootste diameter . . d =
30 mm
Published datasheet value
van
40 v
Published datasheet value
ca
1.5 v
Published datasheet value
De triode D
2 s
Published datasheet value