Data set 01
1999 Philips 0-D
Published operating points and test conditions from this source.
SECTION 1
Magnetron
Other
Operating frequency
9003-9168 MHz
Specialized - Magnetron ·Magnetron
4J78
High-power pulsed magnetron oscillator designed for radar and related short-pulse microwave applications at its specified operating frequency.
Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- -
Description
A forced-air-cooled packaged high-power pulsed magnetron specified as equivalent to the 4J50 except for its 9003–9168 MHz operating-frequency range.
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
Magnetron
X-ray radiationInterelectrode capacitances
No fixed ratings are recorded for this section.
Sparse promoted row allowed: genuine reference/equivalence sheet refers to 4J50 and does not reproduce electrical tables; no external values imported.
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.