DY900

Low-filament-power high-voltage half-wave rectifier for television flyback/EHT service. It converts horizontal-output transformer pulses into the CRT accelerating supply while minimizing isolated heater-power requirements.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: 1.4 V / 170 mA

Description

The Telefunken DY900 is a high-voltage half-wave rectifier for television flyback/EHT supplies.

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: 170 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

Rectifier

X-ray radiationInterelectrode capacitances

Rectifier peak inverse voltage: 19500 V
Rectifier nominal output current: 0.45 mA
Rectifier peak forward current: 10 mA

Television EHT half-wave/flyback rectifier.

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

1959 Telefunken

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

Peak Inverse Voltage
19500 V
FlybackPulse
DC Output Current
0.45 mA
Peak Current
10 mA
FlybackPulse