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Rectifier - Half Wave ·Rectifier

UY85

Single-plate half-wave rectifier for mains supplies using 100 mA series-heater chains. Its 38 V heater provides conventional transformerless power conversion.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
Noval
Socket code
B9A
Base pins
9
Nominal heater
38 V / 100 mA

Description

Single-plate half-wave rectifier for series-heater power supplies.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
Noval
Socket code
B9A
Base pins
9
Nominal heater voltage
38 V
Nominal heater current
100 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Noval - 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
110 mA
Rectifier peak forward current
660 mA
Rectifier max heater-cathode voltage
550 V

Published ratings and characteristics promoted from the approved source.

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

1953 La Radiotechnique

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Perveance

    3.17 mA/V^1.5

Other

  • ACSupplyVoltage

    250 V

    HalfWave;OneTube

  • RectifiedVoltage

    245 V

    HalfWave;OneTube;ACSupply=250V

  • MinimumSeriesResistance

    100 Ohm

    HalfWave;OneTube;ACSupply=250V

  • InputFilterCapacitorMaximum

    100 uF

    CapacitorInputFilter

Data set 02

1953 RFT Rundfunk Technik

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • AC Input Voltage

    250 V

    DC output current 110 mA

Data set 03

1957 Philips Receiving and Amplifying Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Heater Voltage

    38 V

  • Heater Current

    100 mA

Other

  • Reservoir Capacitance

    100 uF

Data set 04

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • HeaterVoltageNominal

    38 V

    Nominal

  • HeaterCurrentNominal

    100 mA

    Nominal

  • Maximum Peak Inverse Voltage

    700 V

    Rectifier

  • Rectified Output Current

    110 mA

    Rectifier

Data set 05

1961 Ferranti Technical Handbook

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • RMS anode voltage maximum

    250 V

Application

  • Application

    Half-wave mains rectifier

Data set 06

1963 Philips Electron Tubes Handbook V1

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • Maximum peak inverse voltage

    700 V

    HalfWave

  • Maximum DC output current

    110 mA

    HalfWave

  • Maximum peak cathode/anode current

    660 mA

    HalfWave

  • Maximum heater-cathode voltage

    550 V

    CathodePositive

  • Maximum filter capacitance

    100 uF

    CapacitorInputFilter

  • AC input voltage

    110 V RMS

    HalfWave

  • Minimum series resistance

    0 ohm

    HalfWave; ACInput=110V

  • DC output voltage

    112 V

    HalfWave; ACInput=110V

  • AC input voltage

    127 V RMS

    HalfWave

  • Minimum series resistance

    0 ohm

    HalfWave; ACInput=127V

  • DC output voltage

    135 V

    HalfWave; ACInput=127V

  • AC input voltage

    220 V RMS

    HalfWave

  • Minimum series resistance

    90 ohm

    HalfWave; ACInput=220V

  • DC output voltage

    215 V

    HalfWave; ACInput=220V

  • AC input voltage

    250 V RMS

    HalfWave

  • Minimum series resistance

    100 ohm

    HalfWave; ACInput=250V

  • DC output voltage

    245 V

    HalfWave; ACInput=250V

Data set 07

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • V a (r .m .s . ) max

    250 V

    Characteristic

Data set 08

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • AC Input Voltage

    250 V

    HalfWave

Application

  • Application

    PowerSupplyRectifier text

Data set 09

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Other

  • HeaterVoltageNominal

    38 V

    Nominal

  • HeaterCurrentNominal

    100 mA

    Nominal

  • Maximum Peak Inverse Voltage

    700 V

  • Rectified Output Current

    110 mA

  • PeakForwardCurrent

    660 mA

  • TransformerVoltageRMS

    250 V

    Single-phase half-wave rectifier

Data set 10

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Rectifier

Characteristic

  • Transformer voltage Vir

    250

    Transformer voltage Vir 250 VRMS

  • D.C. current Iy

    110 mA

    D.C. current Iy 110 mA

  • Heater current If

    100 mA

    Heater current If 100 mA

  • Heater voltage Vg

    38

    Heater voltage Vg 38 Vv

  • Transformer voltage Vir

    110

    Transformer voltage Vir 250 220 127 110 VgMs

  • D.C. output voltage Vo

    112 V

    D.C. output voltage Vo 245 21§ 135 112V

  • D.C. current Iy

    110 mA

    D.C. current Iy 110 110 110 110 mA

  • Protecting resistance Re

    0 Q

    Protecting resistance Re 100 90 0 0 Q

  • Protecting resistance R min.100

    0

    Protecting resistance R min.100 90 0 0 0

  • at transformer voltage Vir

    110

    at transformer voltage Vir 250 220 127 110 Vpyg

Other

  • Anode voltage, peak inverse Va invp max

    700 V

    Anode voltage, peak inverse Va invp max. 700 V

  • D.C. current I max

    110 mA

    D.C. current I max. 110 mA

  • Anode peak current Iap max

    660 mA

    Anode peak current Iap max. 660 mA