Are our tubes burned... III. Are our vacuum tubes burned in and tested before we ship them out? YES. Each vacuum tube is burned-in for a minimum of 48 hours dissipating full power... of each vacuum tube will not drift during the life time of each vacuum tube. Our power tubes are matched within 5% variation on all parameters. We start the process by using vacuum... production testers for plate current, screen current and transconductance (gm). We also check for grid current and leakage between elements. When you receive vacuum tubes from Penta Labs...

applications are required to use matched power tubes to optimize tube performance as well as maximizing the life expectancy. On amplifiers that have individual bias controls... tube is burned-in for a minimum of 48 hours dissipating full power with filament, plate and screen voltages that are normally used in amplifier applications. Thus insuring... that the various electrical parameters have stabilized and the matching of each vacuum tube will not drift during the life time of each audio tube. Our power tubes are matched within 5...

that use power tubes such as the 6L6GC, 6550/KT88, EL84 or EL34. All classic Dynaco amplifiers used ultralinear connection. It is VERY hard on the screen grid of the vacuum tube...What is Single-Ended,... VI. What is Single-Ended, Class A, B, AB, ultralinear, etc? 1. Class A means that the power tube conducts the same amount of current all the time, whether...--most gurus lean either toward Class AB beam-tube amplifiers, or toward SE triodes.) --Class A2 means that the grid is driven MORE POSITIVE than the cathode for part or all...

that optimum levels of on-air performance will be maintained. Penta power grid tubes and cavities are available for all broadcasting requirements, as are klystrons and millimeter-wave...Broadcast PowerSearch: Broadcast Because of its ability to provide superior quality power tubes at competitive prices, while maintaining the highest standards of service, Penta... power amplifiers. Product listing: This is only a partial listing of the electron tubes that Penta Laboratories carries. Please email or call to inquire on vacuum tubes not listed...