Voltage Regulator ·VoltageRegulator
4L27A
Cold-cathode gas-discharge voltage regulator designed to maintain a substantially constant DC potential around 105 V in shunt-regulator service.
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- -
Description
4L27A: Western Electric/RMA cold-cathode voltage regulator with published ratings and operating data. The complete approved datasheet was read semantically, including ratings, characteristics and operating information.
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
- Regulator maintaining voltage
- 105 V
Published ratings and characteristics promoted where applicable; additional useful values retained as parameters.
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.