Specialized - Ballast ·Ballast
Hydrogen-filled current-regulator barretter for series heater strings, using an iron filament to compensate for supply-voltage fluctuations and stabilize receiver heater current.
Philips C3 is a 200 mA barretter/current-regulator tube used in series heater circuits to hold receiver heater current nearly constant over a specified voltage range.
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
No fixed ratings are recorded for this section.
Published ratings and characteristics promoted where semantically applicable; additional published values retained as section parameters.
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.
Regulated current
200 mA
Published datasheet value
Control/regulating range
100-200 V
Published datasheet value
Maximum working voltage
- to 200 V
Published datasheet value
Maximum voltage at switch-on
- to 250 V
Published datasheet value
Construction/use
with built-in surge-limiting resistor
Published datasheet value