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Triode - HV Shunt Regulator ·Triode

PD500

High-voltage shunt-regulator triode for stabilizing the extra-high-tension supply in color television receivers.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: B9D
Socket code: B9A
Base pins: 9
Nominal heater: 7.3 V / 300 mA

Description

High-voltage shunt-regulator triode for color-television extra-high-tension stabilization.

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: B9D
Socket code: B9A
Base pins: 9
Nominal heater voltage: 7.3 V
Nominal heater current: 300 mA
Parallel heater voltage: -
Parallel heater current: -
Series capable: No

B9D - 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

Triode

X-ray radiationInterelectrode capacitances

Max plate voltage: 25000 V
Max plate dissipation: 30 W
Max cathode current: 1.6 mA

Published ratings and characteristics promoted where clearly stated; identical repeated sections compressed when applicable.

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

1967 Mullard Receiving and Amplifying Valves

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Plate voltage
25 kV
ShuntStabilizer
Plate current
1.5 mA
ShuntStabilizer

Other

Maximum plate voltage absolute
27.5 kV
Absolute
Maximum plate dissipation intermittent
40 W
Intermittent10Percent
Maximum negative grid voltage
150 V
Maximum heater-cathode voltage cathode positive
400 V dc + 250 V ac
Maximum heater-cathode voltage cathode negative
250 V
Maximum anode voltage under circuit failure
45 kV
CircuitFailure
Maximum X-ray hazard note
1
ShieldingRequired

Data set 02

1968 Mazda Belvu

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

HeaterVoltageNominal
8 V
Nominal
HeaterCurrentNominal
300 mA
Nominal
Maximum Plate Voltage
25000 V
Maximum Plate Dissipation
30 W
Maximum Cathode Current
1.5 mA

Data set 03

1972 Philips Receiving Tubes

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
7.3 V
Published nominal value
Heater current
300 mA
Published nominal value

Other

Maximum plate dissipation
30 W
Published maximum rating
Maximum anode voltage
25 kV
Design-centre rating
Absolute maximum anode voltage
27.5 kV
Published absolute maximum

Data set 04

1973 Mazda Valves Binder 2

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

Heater voltage
7.3 V
Published nominal value
Heater current
300 mA
Published nominal value

Other

Maximum plate dissipation
30 W
Published maximum rating
Maximum anode voltage
25 kV
Design-centre rating
Maximum anode dissipation
30 W
Published

Data set 05

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

Anode voltage Va
25 kV
Anode current I3 max
1.6 mA
Heater current It
300 mA
Heater voltage V¢
7.3 V
current change from 0.1 to [1]
1.5 mA
current change from 0.1 to [2]
10 V
Grid voltage at I3
1.5 mA
at I3
0.1 mA
Negative grid voltage max
130 V
Grid resistor max
5 MΩ
cathode negative max
250 V
1) If due to a circuit failure the anode current becomes
0 mA
should never exceed
45 kV
this voltage may rise to
440 V
Vs/k is
2.5 µA

Other

Anode voltage max
25 kV
) max
27.5 kV
Anode current max
1.6 mA
Anode dissipation max
30 W