4KT6 Tubes

1. 4KT6 is a thermionic vacuum tube produced by Tung-Sol, which is known for its rugged construction and reliability. It is a medium-mu triode with a large-diameter cathode, allowing it to handle higher plate voltages and current than other similar devices. It has relatively low distortion, making it suitable for use in audio amplifiers and high-quality signal applications. 2. The tube has an indirectly heated cathode, meaning that the cathode does not heat up directly as current runs through it. This provides better power handling in comparison to directly heated cathodes, where the temperature variations would cause large shifts in current output. 3. A secondary grid is present in 4KT6, which is connected to a positive voltage, allowing for additional control over the electron flow through the tube. This can be especially useful when using the tube in high-power applications, such as audio amplifiers, as the secondary grid can be used to limit the amount of voltage and current being passed through the tube. 4. The plate of the 4KT6 is a thick nickel-plated copper plate that is protected by a special glass coating. This ensures that the plate will not be damaged by heat or vibrations and also prevents current leakage, which could damage other components. The plate also has special slots that are used to thread signal wires, allowing for easier interconnections.