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Triode - HV Shunt Regulator ·Triode

6BU4

High-voltage beam triode designed to regulate color-television anode and focus supplies over approximately the 5–25 kV range.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
-
Socket code
B9A
Base pins
9
Nominal heater
-

Description

The CBS 6BU4 is a high-voltage beam triode for regulating color-television anode and focus supplies over roughly 5–25 kV.

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
-
Socket code
B9A
Base pins
9
Nominal heater voltage
-
Nominal heater current
-
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

Triode

X-ray radiationInterelectrode capacitances
Amplification factor
1515

High-voltage regulator beam triode.

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

1960 CBS Hytron

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristics

  • Regulation Voltage Minimum

    5000 V

  • Regulation Voltage Maximum

    25000 V

  • Amplification Factor

    1515 ratio

    At 25kV plate voltage