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Tuning Indicator ·Pentode-TuningIndicator

EFM1

Combination variable-transconductance audio pentode and electron-beam tuning indicator, integrating gain-control or AF amplification with visual receiver tuning.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
2
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 200 mA

Description

Combined variable-transconductance AF pentode and electron-beam tuning indicator.

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

2 physical sections, each with unique specifications.

Section 1

Pentode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Variable-gain LF pentode section.

Section 2

Tuning Indicator

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Electron-beam tuning-indicator section.

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

Pentode

Other

  • Heater voltage

    6.3 V

    Heating

  • Heater current

    200 mA

    Heating

  • Max. Anodenkaltspannung . . . . . . . . . ... .. Vao = max

    550 V

    Limiting values

  • Max. Anodenspannung . . . . . . . . .. ... .. Ve == max

    300 V

    Limiting values

  • Max. Schirmgitterkaltspannung . . . . . . . . . . . .. Vg2e = max

    550 V

    Limiting values

  • Max. Schirmgitterspannung . . . . . . . . . . . .. .. Viz = max

    300 V

    Limiting values

  • Max. Schirmgitterbelastung . . . . . . . . . . . ... W2 = max

    0.4 W

    Limiting values

  • Max, Kaltspannung am Fluoreszenzschirm . . . . . . . . Vso = max,

    550 V

    Limiting values

  • Max. Spannung am Fluoreszenzschirm . . . . . . . . .. Vi = max

    300 V

    Limiting values

  • Max. Kathodenstrom . . . . . ... ... ... ... I, = max

    5 mA

    Limiting values

Characteristic

  • Vo =

    130 V

    Published datasheet value

  • Vo

    250 V

    Published datasheet value

  • punktkurve fir ¥b =

    250 V

    Published datasheet value

  • S]n(f groBere Slz;a'llgltnungb. Ohm und ¥b ==

    250 V

    Published datasheet value

  • Heizstrom . . . . . . . . . . ¢ . . v v .. .. I =

    200 A

    Published datasheet value

  • sowie des Fluoreszenzschirmes . Ve =V, =

    250 V

    Published datasheet value

  • gelten Zustand e e e e e e e — Vi = —

    20 V

    Published datasheet value

  • Anodenstrom e

    8 mA

    Published datasheet value

  • Schirmgitterstrom . . e

    0.6 mA

    Published datasheet value

  • Strom zum F]uoreszenzschu:m

    0.65 mA

    Published datasheet value

  • Anodenspannung

    146 V

    Published datasheet value

  • WY Vp =

    180 V

    Published datasheet value

  • Min, Spannung am Fluoreszenzschirm . . . . . . . . . . Vi = min

    200 V

    Published datasheet value

  • Published electrical value

    13 V

    Published datasheet value