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Voltage Radio Detector Converter ·Octode

EK3

Radio receiver frequency changer combining oscillator and mixer functions for superheterodyne conversion. Its multi-grid construction translates incoming RF signals to the intermediate frequency within the receiver front end.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 200 mA

Description

Indirectly heated octode mixer tube for receiver frequency conversion, with mixer operation, oscillator coupling, operating conditions, electrical characteristics, and limiting values.

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
6.3 V
Nominal heater current
200 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

Octode

X-ray radiationInterelectrode capacitances
Max screen voltage
150 V

Octode mixer tube

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 E-Z

Published operating points and test conditions from this source.

SECTION 1

Octode

Characteristic

  • beim Schwingungseinsatz

    4 mA/V

  • sie_etwa

    60 Ohm

  • Va

    250 V

  • Vgs

    25 V

  • bei einem Ableitwiderstand von

    50 Ohm

  • bedingen eine griflere, leistungsfihigere — \ Va

    250 V

  • Kathode. Deshalb hat die EK3 einen T V2 = s

    100 V

  • groBeren Heizstrom als

    200 mA

  • einem Heizfaden fiir 200-mA-Serienspeisung 40 LTS s

    250 V

  • entwickelt. Vg = l{yz,

    100 V

  • Heizspannung . . . . . Vy

    63 V

  • Anodenstrom . . . ., . . P

    2.5 mA

  • Schirmgitterstrom . . . . . . . . . J;35

    55 mA

  • Oszillatoranodenstrom . . . . . . . I;z

    5 mA

  • Mischsteilheit . . . . . .o .. .8 [1]

    650 pA/V

  • Mischsteilheit . . . . . .o .. .8 [2]

    6.5 pA/V

  • Vosz = 0) o o . o o o o o .. Sg1g2

    4 mA/V

  • Schwingungseinsatz (Vo [1]

    0 V

  • Schwingungseinsatz (Vo [2]

    18 mA

  • Maximale Oszillatoranodenspannung . . . . . . . . Vg2 = max

    150 V

  • Maximale Oszillatoranodenbelastung . . . . . . . . Wy = max

    1 W

  • Oberer Grenzwert des Schirmgitterstroms . . . . . I3+ I;5 = max

    6.6 mA

  • Unterer Grenzwert des Schirmgitterstroms . . . . . Ig3 + Ig5 = min

    4.4 mA

  • Oberer Grenzwert des Oszillatoranodenstroms . . . Ig2 = max

    6 mA

  • Unterer Grenzwert des Oszillatoranodenstroms . . . Igz = min

    4 mA

  • Maximaler Kathodenstrom .. = max

    23 mA

  • Gltterstromelnsatzpunkt des Gxtters 4 .. g4 (1 g4— + [1]

    0.3 pA

  • Gltterstromelnsatzpunkt des Gxtters 4 .. g4 (1 g4— + [2]

    1.3 V

  • (Gleichspannung oder Effektivwert der Wechselsp.) Vi = max

    50 V

  • betragt (

    300 pA

Other

  • Anodenspannung . . . . . . . . . . . . ... Ve

    250 V

  • Schirmgitterspannung. . . . . . . . . . . .. Vess

    100 V

  • Oszillatoranodenspannung. . N

    100 V

  • Oszillatorgitterstrom . . . . . . . . . . . < Iy

    300 pA

  • Neg. Vorspannung an Gitter 4 . . . Vo = —2,5V1) —

    38 V

  • Maximale Anodenkaltspannung . . . . . . . . . . Vo = max

    550 V

  • Maximale Anodenspannung . . . . . . . . . . . .V, = max

    300 V

  • Maximale Anodenbelastung . . . T © = max

    1 W

  • Maximale SLhlrmgltterkaltspannung e e Vasse = max

    550 V

  • Maximale Schirmgitterspannung. . . . . . . . . . Vg3 = max

    150 V

  • Maximale Schirmgitterbelastung. . . c e e W = max

    1 W

  • Maximale Oszfllatoranodenkaltspannung e e Ve = max

    550 V