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Voltage Regulator ·VoltageRegulator

7980

Miniature cold-cathode tube designed specifically to provide a highly stable approximately 83.75 V precision reference.

Directly heatedCold cathodeCommon cathodeDissimilar

Sections: 1
Base: -
Socket code: -
Base pins: -
Nominal heater: -

Description

The Mullard 7980 is a miniature cold-cathode reference tube intended to provide a highly stable reference voltage.

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: -
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

Voltage Regulator

X-ray radiationInterelectrode capacitances

Regulator voltage: 83.75 V
Regulator minimum current: 3.5 mA
Regulator maximum current: 6 mA
Regulator starting voltage: 130 V
Regulator maintaining voltage: 83.75 V

Cold-cathode reference discharge.

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

Voltage Regulator

Other

Minimum DC Starting Voltage
130 V
Maximum Starting Current
10 mA
Maximum Cathode Current
6 mA
Minimum Cathode Current
3.5 mA
Preferred Cathode Current
4.5 mA
Maximum Negative Anode Voltage
50 V

Characteristics

Operating Voltage Minimum
83 V
AtPreferredCurrent
Operating Voltage Maximum
84.5 V
AtPreferredCurrent
Maximum Incremental Resistance
350 ohm
Minimum Incremental Resistance
110 ohm
Typical RMS Noise Voltage
100 uV
30Hz-10kHz