5U4GB

The 5U4GB is a full-wave rectifier tube commonly used in the power supply circuit of vacuum tube audio amplifiers. It functions to convert alternating current (AC) to direct current (DC), providing the necessary voltage for the amplifier’s tubes and other components. Here are some key specifications for the 5U4 rectifier tube:

• Type: Full-Wave Rectifier
• Maximum Plate Voltage: Typically around 450-500 V
• Maximum Plate Current: Typically around 225-250 mA
• Filament Voltage: 5 V
• Filament Current: 3 A
• Rectifier Configuration: Single Anode

The 5U4 is known for its robust design and is capable of handling relatively high voltage and current levels. It’s commonly used in audio amplifiers that require a tube with a specific voltage drop characteristic.