![]() Swing for a half cycle is (Vp-Vmin) and the corresponding peak current swing is Imin, the averaged power delivered Plate-to-plate impedance Rpp of the transformer primary R L = 1/4*Rpp because each half of the center-tapped transformer has half the turns. Of the load-line, is just 1/4 of the full The effective load impedance R L that each tube experiences over it's conducting half-cycle, which is the slope The power delivered to the transformer primary can be calculated from the voltage-swing (or current-swing) along the load-line for the half-cycle thatĮach tube in the push-pull circuit contributes. The plate characteristic shows the single-tube load line for the 6L6 tubeįor the maximum power condition with maximum plate voltage swing corresponding to the grid voltage Ec1 swinging to zero. The schematic diagrams below show component values and zero-signal DC voltage levels. Except for finite transformer inductances, the simulator model assumes an ideal transformer with zero DC resistance and no internal The center-tapped output transformer is characterized by L1 = L2 = 14.4H (half side of primary) and 元 = 0.1H (output secondary) corresponding to a full ![]() The peak control-grid signal voltage is 37Vpeak. The zero-signal plate dissipation per tube is 16.2W. The plate supply voltage Vp is 450VDC, the control-grid bias voltage is -44VDC, and the quiescent plate current per tube is 36mA. These circuit values correspond approximately to the 65 Fender Twin Reverb Ampīut with two tubes (instead of 4) and with an 8 Ω speaker load (instead of the 4Ω load for 4 tubes). The power tubes are standard 6L6 pentodes. The Microcap simulator was used to produce the graphs for a signal frequency of 1kHz. However, keep in mind that downloading the videos is still against YouTube's Terms of Service, so download wisely.The results below present circuit simulations for a push-pull pentode 2-tube power amplifier. Videos that fit one of the aforementioned categories may be found on YouTube with a little bit of searching. Besides that, if you download videos for your personal use with no intention for further distribution or monetization, it is also considered as legal actions. So what kind of content is allowed to be downloaded from YouTube? You can legally download the following sorts of videos from YouTube, namely videos from public domains where no one owns the video due to copyright expiration, forfeiture, etc., videos under Creative Commons license, and copyleft content. In other words, downloading TV shows, movies, video clips, or any other protected (copyrighted) content from YouTube is against the law. Wondering whether it is legal or not to download videos from YouTube? This is a question that will depend on what kind of content you want to download, as there are some that are completely legal and others that are not because they are protected by copyright and licenses that don't allow you to download. Is It Legal To Download Videos From YouTube? In addition, your personal data must also be fully protected. The tool should be free from any malware. Choose a downloader that is capable of converting videos to all possible formats. Some downloaders have a built-in converter with which you can easily convert videos and get the file in the desired format. Other highly preferable features include: ![]() ![]() The best YouTube downloader should also support a variety of video formats, as well as other additional features, including bulk downloads, channels and playlists downloads. The first thing a video downloader should do well is download videos quickly and efficiently. We’ve tested the aforementioned YouTube downloaders on our trusty MacBook Pro (2015) with Monterey, and graded them according to a set of completely objective, totally unbiased criteria. Some of them only come with basic functionality, while others offer quite advanced features. Not all video downloaders offer the same set of features. How to Identify the Best YouTube Downloader ![]()
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