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DAH50

Battery diode-heptode with space-charge grid designed for audio-frequency amplification and detection in low-consumption portable receiving equipment.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 2
Base: -
Socket code: -
Base pins: -
Nominal heater: 1.4 V / 50 mA

Description

DAH50 is a battery diode-heptode with space-charge grid for af amplification and detection. The supplied datasheet was read across its ratings, characteristics, operating information, and capacitance/deflection data where legible.

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: 1.4 V
Nominal heater current: 50 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

Diode

X-ray radiationInterelectrode capacitances

No fixed ratings are recorded for this section.

Battery diode-heptode with space-charge grid for AF amplification and detection

Section 2

Heptode

X-ray radiationInterelectrode capacitances

Max plate voltage: 25 V
Max screen voltage: 15 V

Battery diode-heptode with space-charge grid for AF amplification and detection

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 0-D

Published operating points and test conditions from this source.

SECTION 1

Diode

Characteristic

Filament current with diode connection
25 mA
DiodeSection

SECTION 2

Heptode

Other

Typical anode voltage
15 V
Typical anode current
0.8 mA