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PY32

Indirectly heated series-heater half-wave rectifier for television receiver power supplies. Rated for approximately 700 V peak inverse voltage and 325 mA nominal output for comparatively high-current television circuits.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: IO
Base pins: -
Nominal heater: 29 V / 300 mA

Description

Series-heater half-wave rectifier for television receivers.

Socket description

International Octal

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: IO
Base pins: -
Nominal heater voltage: 29 V
Nominal heater current: 300 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: 700 V
Rectifier nominal output current: 325 mA
Rectifier peak forward current: 2.41 A
Rectifier max heater-cathode voltage: 550 V

Published Mullard ratings, characteristics, capacitances, and operating data promoted where applicable; additional values retained as 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

1963 Mullard

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

RMS input voltage maximum
250 V
CapacitorInputFilter
Surge anode current maximum
7.5 A
Pulse
Reservoir capacitance maximum
100 uF
CapacitorInputFilter
Typical rectifier operating point
200 V RMS input; 325 mA output; 182 V DC; 23 ohm minimum series resistance
CapacitorInputFilter
Typical rectifier operating point
220 V RMS input; 296 mA output; 212 V DC; 27 ohm minimum series resistance
CapacitorInputFilter
Typical rectifier operating point
240 V RMS input; 238 mA output; 248 V DC; 31 ohm minimum series resistance
CapacitorInputFilter
Typical rectifier operating point
250 V RMS input; 210 mA output; 264 V DC; 33 ohm minimum series resistance
CapacitorInputFilter