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Voltage - Triode (single high frequency) ·Triode

A2599GEC

Low-noise VHF triode for grounded-cathode amplifier service, commercial equivalent of CV5242.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 300 mA

Description

Low-noise VHF triode for grounded-cathode use; commercial version of CV5242.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
300 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
Transconductance
0.015 S
Amplification factor
60
Max plate voltage
250 V
Max plate dissipation
2.5 W
Max cathode current
20 mA

Promoted fields mapped semantically from printed ratings/characteristics headings.

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

1968 General Electric Co

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Base: B

    9 A

    Base: B9A

  • 6·

    3 V

    6·3 V

  • Va

    250 V

    Va 250 V

  • pa 2·

    5 W

    pa 2·5 W

  • +Vs

    20 V

    +Vs 20 V

  • Vh-k(pk)

    100 V

    Vh-k(pk) 100 V

  • Tbulb

    200 degC

    Tbulb 200 °C

  • Va(b) 180

    250 V

    Va(b) 180 250 V

  • *Noise factor (average) 1·5 6·

    8 dB

    *Noise factor (average) 1·5 6·8 dB

  • tNoise factor (average) 1·3 4·

    7 dB

    tNoise factor (average) 1·3 4·7 dB

  • !:Power gain (approx) 30

    20 dB

    :!:Power gain (approx) 30 20 dB

  • Fig. 1. Circuit of

    45 MHz

    Fig. 1. Circuit of 45Mc/s cascode amplifier.

  • VI A2599 RI, R3 6811 0·

    25 W

    VI A2599 RI, R3 6811 0·25W

  • V3 Z77 R5 4'7kO 0'

    25 W

    V3 Z77 R5 4'7kO 0'25W

  • Capacitors R6 l'OM11 0·

    25 W

    Capacitors R6 l'OM11 0·25W

  • CI 2

    -8 pF

    CI 2-8pF R7 1500 0·25W

  • C2 to C14, C 16 l

    0 pF

    C2 to C14, C 16 l000pF R9 22k11 0·25W

  • CI5

    470 pF

    CI5 470pF RIO 10011 0'25W

  • *Core is of the type recommended for use up to

    100 MHz

    *Core is of the type recommended for use up to 100 Mc/s,

  • Fig. 2. Circuit of

    200 MHz

    Fig. 2. Circuit of 200Mc/s cascade amplifier.

  • RI 6811. Cl, C6 3

    -30 pF

    RI 6811. Cl, C6 3-30pF ceramic trimmer.

  • R2-R3 rooi o, C2, C4, C9

    4700 pF

    R2-R3 rooi o, C2, C4, C9 4700pF feedthrough.

  • C5, C8

    2000 pF

    C5, C8 2000pF.

  • A

    2599 A

    A2599 A 2521

  • Fig. 3. Layout of

    200 MHz

    Fig. 3. Layout of 200Mc/s cascode amplifier.

Capacitance

  • Cg-all. less a: 3·

    5 pF

    Cg-all. less a: 3·5pF; Ca-all. less g: 0'7pF; Cg-a: 1·lpF.

Characteristic

  • Va

    130 V

    Va 130 V

  • gm

    15 mA

    gm 15 mA/V

  • * Measured hot at

    45 MHz

    * Measured hot at 45Mc/s with anode decoupled to cathode.