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Rectifier - Half Wave ·Rectifier

225A

Eimac 2-25A directly heated high-vacuum rectifier for specialized high-voltage supplies. Its compact heavy-duty construction provides tens-of-kilovolts inverse-voltage capability at modest current.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
J4
Base pins
4
Nominal heater
6.3 V / 3 A

Description

The Eimac 2-25A is a high-vacuum rectifier for high-voltage power supplies, rated for approximately 50 mA average plate current and 25 kV peak inverse voltage.

Socket description

Jumbo 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
J4
Base pins
4
Nominal heater voltage
6.3 V
Nominal heater current
3 A
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

Rectifier

X-ray radiationInterelectrode capacitances
Max plate dissipation
15 W
Rectifier peak inverse voltage
25000 V
Rectifier nominal output current
50 mA
Rectifier peak forward current
1 A

Published per-tube maximum ratings promoted from the source.

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

1950 Eimac Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Average plate current

    50 mA

    Maximum average plate current from Eimac high-vacuum rectifier table.

  • Plate dissipation

    15 W

    Maximum plate dissipation from Eimac high-vacuum rectifier table.

  • Peak inverse voltage

    25000 V

    Maximum peak inverse voltage from Eimac high-vacuum rectifier table.

  • Filament voltage

    6.3 V

    Nominal filament voltage from Eimac high-vacuum rectifier table.

  • Filament current

    3 A

    Nominal filament current from Eimac high-vacuum rectifier table.

Data set 02

1962 Eimac

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Plate Resistance

    1200 ohm

  • Filament Voltage Range

    6 to 6.6 V

    For maximum tube life

Data set 03

1965 Eimac Tube Manual

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • The [1]

    2 mA

    The 2-25A has a maximum d-c current rating of 50 milliamperes and a

  • The [2]

    -25 mA

    The 2-25A has a maximum d-c current rating of 50 milliamperes and a

  • The [3]

    50 mA

    The 2-25A has a maximum d-c current rating of 50 milliamperes and a

  • maximum peak inverse vol+age rating of

    25

    maximum peak inverse vol+age rating of 25.000 vol+s. Cooling is by convection

  • A single [1]

    2 pF

    A single 2-25A will deliver 40 milliamperes at 10,000 volts +o a capacitor-

  • A single [2]

    -25 pF

    A single 2-25A will deliver 40 milliamperes at 10,000 volts +o a capacitor-

  • A single [3]

    40 pF

    A single 2-25A will deliver 40 milliamperes at 10,000 volts +o a capacitor-

  • A single [4]

    10000 pF

    A single 2-25A will deliver 40 milliamperes at 10,000 volts +o a capacitor-

  • Current

    3 A

    Current 3.0 amperes

  • Maximum Temperature of plate seal

    225

    Maximum Temperature of plate seal - - 225OC

  • PEAK INVERSE PLATE VOLTAGE

    25000 V

    PEAK INVERSE PLATE VOLTAGE - - 25,000 MAX. VOLTS

  • PLATE DISSIPATION

    15 W

    PLATE DISSIPATION - - - 15 MAX. WATTS

  • D-C PLATE CURRENT]

    50 mA

    D-C PLATE CURRENT] . . . 50 MAX. MA

  • PEAK PLATE CURRENT I

    0 mA

    PEAK PLATE CURRENT I.0 MAX. AMPERE

  • MECHANICAL Cooling-The [1]

    2

    MECHANICAL Cooling-The 2-25A is cooled by convoc+ion and radiation.

  • MECHANICAL Cooling-The [2]

    -25

    MECHANICAL Cooling-The 2-25A is cooled by convoc+ion and radiation.

  • the [1]

    2

    the 2-25A begins to show color es the maximum plate dissipa- under given load conditions. Tllis roquirod minimum depends

  • the [2]

    -25

    the 2-25A begins to show color es the maximum plate dissipa- under given load conditions. Tllis roquirod minimum depends

  • +ion rating of

    15 mA

    +ion rating of 15 wet+s is approached. The maximum poak upon the d-c current per tube (I p), and has been tabulated in

  • inverse voltage rating of [1]

    25 V

    inverse voltage rating of 25.000 volts should no+ be oxceoded at Fig. 2 as a percentage of the effec+ive load resistance per tube

  • inverse voltage rating of [2]

    2 V

    inverse voltage rating of 25.000 volts should no+ be oxceoded at Fig. 2 as a percentage of the effec+ive load resistance per tube

  • performance capabili+ies of the [1]

    2 W

    performance capabili+ies of the 2-25A when used as a power- vol+age supply, Ri.

  • performance capabili+ies of the [2]

    -25 W

    performance capabili+ies of the 2-25A when used as a power- vol+age supply, Ri.

  • Rp is +he plate resis+ance of the [1]

    2

    Rp is +he plate resis+ance of the 2-25A, which may be

  • Rp is +he plate resis+ance of the [2]

    -25

    Rp is +he plate resis+ance of the 2-25A, which may be

  • vo;i:'a:g:e:t, D-i:g3u!,:ut D [1]

    8 V

    :vo;i:'a:g:e:t, D-i:g3u!,:ut D-8,u:'a:;nEu, D-i:3a:i,:ut Diu:Hut may be taken as the regulation of the high-voltage supply ex-

  • vo;i:'a:g:e:t, D-i:g3u!,:ut D [2]

    3 V

    :vo;i:'a:g:e:t, D-i:g3u!,:ut D-8,u:'a:;nEu, D-i:3a:i,:ut Diu:Hut may be taken as the regulation of the high-voltage supply ex-

  • Phase [1]

    88001

    Phase. 88001 10, COO cO 79cO loo charging circuit to bring +he total charging-circuit resistance

  • Phase [2]

    10

    Phase. 88001 10, COO cO 79cO loo charging circuit to bring +he total charging-circuit resistance

  • Phase [3]

    79

    Phase. 88001 10, COO cO 79cO loo charging circuit to bring +he total charging-circuit resistance

  • peak current usually limits +ho d-c current whicl` the [1]

    2 A

    peak current usually limits +ho d-c current whicl` the 2-25A capability in a given circuit. When +wo +ubes are placed in

  • peak current usually limits +ho d-c current whicl` the [2]

    -25 A

    peak current usually limits +ho d-c current whicl` the 2-25A capability in a given circuit. When +wo +ubes are placed in

  • pation associated wi+h a given d-c current d®ponds upon the

    2 A

    pation associated wi+h a given d-c current d®ponds upon the 2] the plate resistance (Rp) will be half as great and the

  • the [1]

    2 W

    the 2-25A is 25,000 volts. In single-phase power-supply rectifier

  • the [2]

    -25 W

    the 2-25A is 25,000 volts. In single-phase power-supply rectifier

  • the [3]

    25000 W

    the 2-25A is 25,000 volts. In single-phase power-supply rectifier

  • peak a-c supply voltage (I [1]

    41 V

    peak a-c supply voltage (I.41 times Elms in Fig. 2) in the

  • peak a-c supply voltage (I [2]

    2 V

    peak a-c supply voltage (I.41 times Elms in Fig. 2) in the

  • is low, the [1]

    2 A

    is low, the 2-25A is capable of larger d-c ou+put currents.

  • is low, the [2]

    -25 A

    is low, the 2-25A is capable of larger d-c ou+put currents.

  • half-wave rec+i{iers. maximum current rating of the [1]

    2 mA

    half-wave rec+i{iers. maximum current rating of the 2-25A is 90 milliamperes.

  • half-wave rec+i{iers. maximum current rating of the [2]

    -25 mA

    half-wave rec+i{iers. maximum current rating of the 2-25A is 90 milliamperes.

  • half-wave rec+i{iers. maximum current rating of the [3]

    90 mA

    half-wave rec+i{iers. maximum current rating of the 2-25A is 90 milliamperes.

  • Capacioer-Input Finer-The [1]

    2

    Capacioer-Input Finer-The 2-25A is par+icularly suitable for Tl`e pla+a cliarac+®ris+ic curve for +he 2-25A serves as a

  • Capacioer-Input Finer-The [2]

    -25

    Capacioer-Input Finer-The 2-25A is par+icularly suitable for Tl`e pla+a cliarac+®ris+ic curve for +he 2-25A serves as a

  • Capacioer-Input Finer-The [3]

    2

    Capacioer-Input Finer-The 2-25A is par+icularly suitable for Tl`e pla+a cliarac+®ris+ic curve for +he 2-25A serves as a

  • Capacioer-Input Finer-The [4]

    -25

    Capacioer-Input Finer-The 2-25A is par+icularly suitable for Tl`e pla+a cliarac+®ris+ic curve for +he 2-25A serves as a

  • current. Under +hose condi+ions capacitor-inpu+ fil+er circui+s ra+ing of

    15 V

    current. Under +hose condi+ions capacitor-inpu+ fil+er circui+s ra+ing of 15 watts, the maximum peak inverse voltage rating of

  • become desirable. Tlie maximum d-c current rating of the [1]

    2 mA

    become desirable. Tlie maximum d-c current rating of the 2-25A 25,000 vol+s, and tlle maximum peak plate current of I.0 ampere

  • become desirable. Tlie maximum d-c current rating of the [2]

    -25 mA

    become desirable. Tlie maximum d-c current rating of the 2-25A 25,000 vol+s, and tlle maximum peak plate current of I.0 ampere

  • become desirable. Tlie maximum d-c current rating of the [3]

    25000 mA

    become desirable. Tlie maximum d-c current rating of the 2-25A 25,000 vol+s, and tlle maximum peak plate current of I.0 ampere

  • become desirable. Tlie maximum d-c current rating of the [4]

    0 mA

    become desirable. Tlie maximum d-c current rating of the 2-25A 25,000 vol+s, and tlle maximum peak plate current of I.0 ampere

  • Eimac [1]

    2 mA

    Eimac 2-25A Maximum D-C Current Ratings for R-C Fil+er Applications

  • Eimac [2]

    -25 mA

    Eimac 2-25A Maximum D-C Current Ratings for R-C Fil+er Applications

  • D-C Pla+® Current (I p) [1]

    35 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube

  • D-C Pla+® Current (I p) [2]

    37.5 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube

  • D-C Pla+® Current (I p) [3]

    40 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube

  • D-C Pla+® Current (I p) [4]

    42.5 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube

  • D-C Pla+® Current (I p) [5]

    45 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube

  • D-C Pla+® Current (I p) [6]

    47.5 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube

  • D-C Pla+® Current (I p) [7]

    50 A

    D-C Pla+® Current (I p) 35.0 37.5 40.0 42.5 45.0 47.5 50.0 milliamperos per +ube