Tube technology had its peak of development in the 1960s...1970s. And everything that could be thought up was thought up and produced by well-known companies. You just need to repeat the circuit you like! This video shows the analysis of the operation and adjustment of the circuit of a push-pull audio amplifier assembled on 6N2P and 6P14P radio tubes according to the classic "Marshall 18 Watt" circuit. The entire process of setting up the circuit and all detailed tests are accompanied by oscillograms taken using the Shmelev Computer Measuring Complex. For those who want to translate the text of the video into other languages, a file with the full text of the video is attached - for substitution in an electronic translator. The mail of the "Unknown Physics" Channel has changed. Now you can write letters to the address [email protected] (the old mail [email protected] also works - where it is available!) *** You can help develop the Channel: Yandex Money: https://yoomoney.ru/to/410013004521132 VISA (Russia) 4048-0250-0094-9167 This makes it possible to purchase the necessary electronic components for shooting videos according to your requests. Thank you for your help, friends! *** Video materials: https://drive.google.com/drive/folder... Video links: "Phase inverter - the input stage of the PP audio amplifier" • Phase inverter - the input stage of the PP amplifi... "Tube Phase Inverter Long Tail and other phase inverters" • Tube Phase Inverter Long Tail ... "Comparison of radio tubes 6P14P and EL84 V-A characteristic THD IMD frequency response" • Comparison of radio tubes 6P14P and EL84. V-A characteristic ... "PP amplifier according to the Marshall scheme" • PP amplifier according to the Marshall scheme "Tube PP push-pull audio amplifiers." • Tube PP push-pull audio amplifiers. "Electronic choke of the anode power supply for a tube PP amplifier." • Electronic choke of the anode power supply ... "Measuring the characteristics of the audio output transformer" • Measuring the characteristics of the output tra... "TVZ. Suitability of the Output Transformer of Audio» • TVZ. Suitability of the Output Transformer... Output Transformer of Audio TVZ-66PP-Universal (M6) - https://tec.org.ru/board/tvz_66pp_uni... Website «18 Watt» («Marshall 18 Watt») http://18watt.com/ «Library of Radio Amateur» https://www.radiolibrary.ru/ Kirill's VKontakte group - «Germanium Amplifiers» - https://vk.com/club173811391 00:00 Welcome to the channel «Unknown Physics»! 00:06 Amplifier «Marshall 18 Watt». 00:54 Assembled simplified circuit of the amplifier 6N2P + 6P14P. 01:16 A similar circuit under consideration on 6P15P. 01:39 Detailed analysis of the assembled circuit of the 6N2P+6P14P amplifier. 02:48 Characteristics of the 6N2P radio tube. 03:02 Characteristics of the 6P14P radio tube. 04:02 General view of the assembled amplifier. 04:08 View of the assembled amplifier installation. 04:26 Analysis of the circuit and adjustment of the phase inverter of the PP amplifier – 6N2P. 05:49 THD test of the phase inverter of the PP amplifier – 6N2P. 06:24 IMD test of the phase inverter of the PP amplifier – 6N2P. 06:52 Frequency response of the phase inverter of the PP amplifier – 6N2P. 07:31 Problems with the audio output transformer. 09:13 Pinout of the applied TVZ. 10:13 Adjustment of the radio tubes of the output stage – 6P14P. 10:31 THD test of the final stage of the PP amplifier. 11:25 Frequency response of the output stage of the PP amplifier. 11:46 THD test of the TV3 amplifier 6N2P+6P14P. 12:34 IMD test of the TV3 amplifier 6N2P+6P14P. 13:13 Frequency response of the TV3 amplifier 6N2P+6P14P. 13:30 THD test of the 6N2P+6P14P amplifier. 14:21 IMD test of the 6N2P+6P14P. 15:04 Frequency response of the 6N2P+6P14P amplifier. 15:38 Voltage map of the 6N2P+6P14P amplifier. 16:35 6N2P I-V characteristic real operating point and operating line. 17:20 6П14П VAH real working point and working line. 18:44 Main directions for experiments are designated! Videos in the form of short stories and tales about Physics in the world around us are released every week. If you liked the story - like and subscribe to the channel so as not to miss the continuation! QUESTIONS can be asked in the comments to any video, on social networks and by e-mail of the channel: [email protected] I answer all SPECIFIC questions. I hope that your questions and joint answers will help make the channel "Unknown Physics" more interesting! *********************************************************** The channel has many playlists with videos about birds and animals, about HANDMADE, DIY, HUMOR, entertaining PHYSICS, stories about TRAVELING, YUMMY, TRICKS, how to make a cartoon and much more... You will definitely find a video according to your interests! The CHANNEL NAVIGATOR will help you navigate the channel. LINKS to the channel's videos are posted on perso