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EEP1

Secondary-emission tetrode for wide-band amplification and phase inversion. Its specialized electrode system provides high gain and signal-processing performance over a broad frequency range.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 6.3 V / 600 mA

Description

Secondary-emission tetrode for wide-band amplification and phase inversion. The supplied Philips source was read for heater data, ratings, characteristics, operating conditions, and capacitances; special secondary-emission quantities are retained as parameters where standard section fields do not apply.

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: 600 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

Tetrode

X-ray radiationInterelectrode capacitances

Plate resistance: 50000 Ω
Transconductance: 0.017 S
Amplification factor: 65
Max plate voltage: 400 V
Max plate dissipation: 4 W

Secondary-emission tetrode; special secondary-cathode data retained in parameters.

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

Tetrode

Characteristics

Heater voltage
6.3 V
Heater current
600 mA
Typical plate voltage
250 V
Secondary cathode voltage
150 V
Grid 2 voltage
150 V
Grid 1 voltage
-2.5 V
Plate current
8 mA
Secondary cathode current
-6.5 mA
Grid 2 current
0.45 mA
Transconductance
17000 uS
Amplification factor
65
Plate resistance
50 kohm

Construction

Tube construction
Secondary-emission amplifier system

Capacitance

Plate capacitance
7.5 pF
Secondary cathode capacitance
6 pF
Grid input capacitance
10.6 pF
Plate-grid capacitance maximum
0.006 pF
Secondary cathode-grid capacitance maximum
0.001 pF
Grid-heater capacitance maximum
0.05 pF