What is a power tube?

What is a power tube?

Definition of power tube : a vacuum tube of large output suitable for use as a generator of alternating current or as a power amplifier.

How do tube amplifiers work?

Electrons flowing through a tube originate from ground. The cathodes of the EF86 and the EL84 each have a resistor attached to ground. This creates the small DC voltage on their cathodes to prevent the electrons from flowing. When the guitar signal reaches the grid, the electrons then flow.

What is the output power of a 6146 tube?

With an ICAS plate dissipation of 25 watts a single 6146 could produce a maximum output on CW of 69 watts while operating with a plate voltage of only 750 volts. This was remarkable compared to other tubes available at that time, which required higher plate voltages and/or higher driving power for the same output.

How did the 6L6 power tube revolutionize power tube design?

The 6L6 revolutionized power tube design by forming the electrons into beams and using aligned control and screen grids to limit grid and screen currents. Forming the electrons into beams increased the space charge near the plate, which then repelled secondary electrons back to the plate, eliminating the need for a surpressor grid.

What are the different types of beam power tubes?

Other beam tubes eventually followed, including the 6146, 6146B, 6146W, 2E26, 5763, 813, 6V6, and others. For more detailed information on the 6146 and 6146B beam power tube, click on the links below to read the data sheets. You can also download the complete 6146 and 6146B data sheets in PDF format.

How to make a stereo tube amplifier?

EL34 is very famous tube and great for power tube amplifier. The circuit above is complete circuit contains tube amplifier circuit diagram and power supply circuit diagram. To make the stereo channel amplifier, build the similar amplifier circuit only and connect to the power supply using parallel connection with another same amplifier.