Power - Triode ·Triode
Receiving triode for amplification, detection, oscillator, or general electronic service as documented by the manufacturer.
Triode; electrical ratings and operating data extracted from the supplied Mullard datasheet.
Large 4-contact bayonet base
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
Ratings and characteristics extracted from supplied source. Mullard MZ2-200 (normalized MZ2200) directly heated 4 V, 2.2 A power triode with 275 W maximum plate dissipation, intended for low-frequency power-output and transmitter modulator stages. Manufacturer documents push-pull Class AB2 operation with two tubes and direct-coupled EL37 drivers. The various 1.5–2.25 kV values are specific circuit operating examples, not established unconditional maximum plate-voltage limits. Large four-pin bayonet base.
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.
HeaterOrFilamentVoltage
4 V
HeaterOrFilamentCurrent
2.2 A
Input Capacitance
16 pF
Output Capacitance
5.6 pF
Grid To Plate Capacitance
16.2 pF
Maximum Plate Dissipation
275 W