Data set 01
1962 Eimac
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Capacitance
Input Capacitance
875 pF
Grounded cathode
Output Capacitance
115 pF
Grounded cathode
Feedback Capacitance
1.2 pF
Grounded cathode
Power - Tetrode (NOT beam) (over 1000V 100W) ·Tetrode
4CV250000
High-power ceramic/metal transmitting tetrode designed for RF power amplification, linear amplification, oscillation, modulation, broadcast, or related high-power service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- -
- Nominal heater
- 12 V / 660 A
Description
The EIMAC 4CV250,000 is a ceramic-metal vapor-cooled power tetrode intended for the 250 to 500 kilowatt output level and high-power amplifier or modulator service.
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
- 12 V
- Nominal heater current
- 660 A
- 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
Tetrode
X-ray radiationInterelectrode capacitances
- Amplification factor
- 4.5
- Max plate voltage
- 25000 V
- Max screen voltage
- 2500 V
- Max plate dissipation
- 250000 W
- Max screen dissipation
- 3500 W
- Max grid dissipation
- 1500 W
- Max cathode current
- 50 A
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 02
1965 Eimac Tube Manual
Published operating points and test conditions from this source.
SECTION 1
Tetrode
Characteristic
Heater/Filament Voltage
12 V
Other
Maximum DC Plate Voltage
25000 V
Maximum DC Screen Voltage
2500 V
Maximum Plate/Cathode Current
50 A
Maximum Plate Dissipation
250000 W
Maximum Screen Dissipation
3500 W
Maximum Grid Dissipation
1500 W
Frequency for Maximum Ratings
30 MHz
Construction
Cooling
Vapor and forced air
Application
Intended Output Power Range
250-500 kW