Power - Triode vacuum tubes

Triode

High-power directly heated modulator triode for low-frequency power and modulation service.

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Triode

Directly heated high-power modulator triode for low-frequency power and modulation service.

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Triode

Directly heated triode for modulator and low-frequency power-amplifier service.

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Triode

Directly heated high-power triode for modulator and low-frequency amplifier service.

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Triode

Directly heated modulator, audio, and RF power triode providing about 22 watts Class-A audio output and 97 watts Class-C RF output.

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Triode

The Philips MC1/50 is an indirectly heated modulator and power-amplifier triode intended for audio-frequency and radio-frequency service. Its oxide-cathode construction supports substantial emission and good mechanical strength. The tube can serve in anode modulation, audio amplification, or RF oscillator circuits.

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10 V

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Triode

Philips power triode intended for audio-frequency modulator service. Published operation provides about 22 W Class A or roughly 204 W from a two-tube Class B stage.

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4 V

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Triode

Directly heated modulator and low-frequency power triode providing about 22 watts Class-A output and 200 watts from two tubes in Class-B.

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Triode

Directly heated modulator and RF/LF power triode providing about 74 watts Class-A modulator output and 716 watts from two tubes in Class-B.

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Triode

Power transmitting triode intended for RF amplification, oscillation, or related professional service. Manufacturer documentation emphasizes radio-frequency operation, substantial plate loading, and transmitter or industrial applications.

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6.3 V

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Triode

Receiving triode for amplification, detection, oscillator, or general electronic service as documented by the manufacturer.

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LARGE4BAYONET

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4 V

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Triode

Tungsram oxide-filament transmitting triode for RF power amplification and oscillator service. Rated around 1 kV plate operation and 75 W dissipation, it provides useful medium-power transmitting performance.

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10 V

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Triode

Tungsram thoriated-filament shortwave transmitting triode for RF power amplification and oscillation. With about 1.5 kV plate capability, 50 W dissipation, and high transconductance, it suits compact shortwave transmitters.

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7.5 V

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Triode

Battery-operated power-output triode for portable-receiver audio stages.

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2 V

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Triode

Super-power output triode for driving moving-coil loudspeakers.

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B4

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2 V

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Triode

Tungsram oxide-filament power triode designed for audio-frequency power amplification. With about 600 V plate capability and 25 W dissipation, it provides substantial linear output for high-voltage audio stages.

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7.5 V

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Triode

Tungsram low-mu oxide-filament audio power triode for high-output amplification. Its low plate resistance and 28 W dissipation favor high-current transformer-coupled output stages.

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4 V

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Triode

Tungsram oxide-filament audio power triode with high transconductance. Rated for about 500 V and 25 W dissipation, its relatively low plate resistance provides strong current drive for substantial output stages.

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4 V

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Triode

Oxide-filament power triode for audio-frequency output-amplifier service.

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7.5 V

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Triode

Tungsram high-power oxide-filament triode for audio-frequency power amplification. With about 800 V plate capability and 40 W dissipation, it supports high-voltage linear output stages.

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7.2 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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B4

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4 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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B4

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4 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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B4

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4 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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B4

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6 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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B4

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6 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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B4

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6 V

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Triode

Power-output triode designed for audio-frequency output stages and loudspeaker drive.

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4 V

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Triode

Directly heated Mazda mains-output triode for audio power amplification. Its low amplification factor, moderate plate resistance, and 15 W dissipation suit transformer-coupled Class A output stages.

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2 V

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Triode

Directly heated Mazda mains-output power triode for higher-power audio stages. Rated around 450 V and 40 W dissipation, its low amplification factor and high transconductance provide strong output-stage current drive.

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4 V

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Triode-Triode

Low-consumption battery twin power triode designed for Class-B positive-drive audio output, providing push-pull power amplification in portable battery equipment.

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2 V

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2

Triode

General Electric high-vacuum Pliotron triode for amplification, relay, audio, and RF power service. Modest plate dissipation and several-hundred-volt operation make it an early general-purpose power device spanning low-frequency and radio-frequency circuits.

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B4B

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4.5 V

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Triode

Penta radiation-cooled power triode for RF amplification, frequency multiplication, oscillation, and audio power service. High plate-voltage capability and moderate amplification factor provide versatile transmitter and modulator performance.

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J4

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Triode

The Penta PL3-500ZG is a high-mu transmitting power triode intended for zero-bias Class AB2 audio and RF amplification. Its directly heated filament and forced-air-assisted cooling support high output with a 500-watt plate-dissipation rating. Cathode-driven operation simplifies amplifier bias arrangements.

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5 V

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Triode

Directly heated Mazda output triode for AC receiver audio stages. Published operation provides several watts single-ended or substantially more in push-pull, making it a versatile medium-power receiver output tube.

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4 V

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Triode

Directly heated Mazda power triode for high-voltage audio-output service. Approximately 25 W plate dissipation and moderate gain support several watts of single-ended transformer-coupled audio output.

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4 V

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Triode

Classic directly heated low-impedance audio power triode for high-quality Class A output stages. Approximately 25 W plate dissipation, high transconductance, and low plate resistance support roughly five watts of single-ended output.

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UX4

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B4

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4 V

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Triode

High-transconductance development of the OSRAM PX25 directly heated power triode. Approximately 25 W plate dissipation and increased transconductance provide stronger drive and gain for high-quality audio power stages.

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B4

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4 V

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Triode

Directly heated coated-filament low-mu power triode for low-frequency Class A amplification. Moderate plate dissipation and low amplification factor support several watts of single-ended output into a transformer-coupled load.

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2.5 V

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Triode

Modern directly heated audio power triode in the 300B tradition. Approximately 40 W plate dissipation, low amplification factor, and moderate plate voltage support several watts of single-ended Class A output.

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5 V

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Triode

Classic Marconi/Osram directly heated audio power triode designed as a high-output receiver valve. Moderate plate dissipation, low amplification factor, and useful transconductance suit transformer-coupled Class A loudspeaker output.

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UX4

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B4

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4 V

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Triode

Low-mu La Radiotechnique audio power triode for single-ended and symmetrical Class A amplifier service. Low plate resistance, useful transconductance, and approximately 15 W plate dissipation support moderate high-quality audio output.

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6.3 V

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Triode

The R31 is an early Radio-Watt power triode designed as the final audio amplifier in radio receivers. Its relatively low internal resistance and substantial filament current support loudspeaker operation. The tube is intended for battery-powered receiving equipment requiring greater audio output.

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Triode

Directly heated low-frequency power-amplifier triode intended especially for final audio stages driving loudspeakers.

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3.8 V

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Triode

The Micro-Ampli R50 is an early power-output receiving triode intended for high-quality loudspeaker reproduction. Its relatively low filament consumption and useful amplification permit operation in battery-powered radio equipment. The tube is designed for final audio-frequency amplification at modest plate voltages.

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Triode

Lorenz indirectly heated decimeter-wave transmitting triode with published static characteristics and high-frequency application data.

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12.6 V

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Triode

German transmitting and control triode with published electrical ratings and operating data for professional RF service.

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12.6 V

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Triode

Tesla directly heated transmitting triode; 1.5 kW plate dissipation; up to 30 MHz.

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13 V

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Triode

Forced-air-cooled Tesla transmitting triode for Class C RF power amplification and oscillator service. Approximately 1 kW plate dissipation supports moderate professional transmitter power through the HF range.

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