Voltage Regulator ·VoltageRegulator
Neon-filled cold-cathode voltage stabilizer for regulated power supplies and reference service, operating around 90–95 V.
The Mullard 4687 is a neon-filled voltage-stabilising tube with a 90-110 V burning range.
International Octal
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Cold-cathode gas-filled Philips voltage stabilizer/reference tube.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Running voltage
90 V
At20mA
Striking voltage
105 V
VoltageRegulator
Extinction voltage
85 V
VoltageRegulator
Lower stabilization current
5 mA
VoltageRegulator
AC resistance
180 Ω
VoltageRegulator
Quiescent current
20 mA
VoltageRegulator
Maximum permissible current
40 mA
VoltageRegulator
Data set 02
Published operating points and test conditions from this source.
Burning Voltage Minimum
90 V
Burning Voltage Maximum
110 V
Quiescent Current
20 mA
Data set 03
Published operating points and test conditions from this source.
Maintaining voltage typical
95 V
Striking voltage maximum
130 V
Maintaining current minimum
10 mA
Maintaining current maximum
40 mA
Data set 04
Published operating points and test conditions from this source.
Maintaining voltage at 20 mA
95 V
Voltage regulation
- to 10 V
Ia=10-40mA
Data set 05
Published operating points and test conditions from this source.
Average operating voltage
90 V
Voltage at 20 mA
95 V
Regulation
max 10 V
Ia=10-40mA