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Power - Triode (over 1000V 100W) ·Triode

ACT27

Industrial transmitting power triode intended for RF amplification, oscillation, or modulation. Manufacturer data emphasize substantial plate power, professional transmitter operation, and construction suited to continuous high-power service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
-

Description

The ACT27 is a forced-air-cooled transmitting triode for common-grid UHF service, usable as an oscillator to about 400 MHz and as an amplifier to about 600 MHz.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
-
Nominal heater current
-
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
0.04 S
Max plate voltage
1500 V
Max plate dissipation
1500 W

Published maximum ratings and characteristics audited; remaining useful numerical data retained in TUBE_SECTION_PARAMETER.

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

1955 Marconi

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • ting triode, fitted with an indirectly heated cathode, t

    20

    ting triode, fitted with an indirectly heated cathode, t .020

  • The external grid seal also requires air cooling. The [1]

    10

    The external grid seal also requires air cooling. The 10-06

  • The external grid seal also requires air cooling. The [2]

    -6

    The external grid seal also requires air cooling. The 10-06

  • All cooling supplies must be in operation before " ON [1]

    4

    All cooling supplies must be in operation before " ON 4 25

  • All cooling supplies must be in operation before " ON [2]

    25

    All cooling supplies must be in operation before " ON 4 25

  • applying any voltage to the valve and should con

    10.125 V

    applying any voltage to the valve and should con- 10.125'

  • tinue for at least [1]

    2 V

    tinue for at least 2 minutes after removal of all voltages. 2-125

  • tinue for at least [2]

    2 V

    tinue for at least 2 minutes after removal of all voltages. 2-125

  • tinue for at least [3]

    -125 V

    tinue for at least 2 minutes after removal of all voltages. 2-125

  • The holes in the grid ring are provided for cooling ) [1]

    0

    The holes in the grid ring are provided for cooling ) 0-375,

  • The holes in the grid ring are provided for cooling ) [2]

    -375

    The holes in the grid ring are provided for cooling ) 0-375,

  • Frequency. At frequencies above

    350 MHz

    Frequency. At frequencies above 350 Mc/s, the anode

  • Inside diameter of anode line [1]

    4

    Inside diameter of anode line 4% in. +.040"

  • Inside diameter of anode line [2]

    40

    Inside diameter of anode line 4% in. +.040"

  • Outside diameter of grid line

    4

    Outside diameter of grid line 4 in.

  • Frequency [1]

    200 MHz

    Frequency 200 400 400 600 Mc/s.

  • Frequency [2]

    400 MHz

    Frequency 200 400 400 600 Mc/s.

  • Frequency [3]

    400 MHz

    Frequency 200 400 400 600 Mc/s.

  • Frequency [4]

    600 MHz

    Frequency 200 400 400 600 Mc/s.

  • Va (max) [1]

    1 W

    Va (max) 1-5 kv RF Power Amplifier, CW operation

  • Va (max) [2]

    -5 W

    Va (max) 1-5 kv RF Power Amplifier, CW operation