This video continues the story about push-pull audio amplifiers. In the simplest stereo amplifier, assembled on only four 6N23P and GU-17 radio tubes, I will replace the audio output transformer with power anode-filament and filament transformers. What will come of such a replacement - you will learn from this video. You will find out a detailed analysis of each circuit for connecting the audio output transformer and tests on 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 Channel "Unknown Physics" has changed. Now you can write letters to the address [email protected] (the old mail [email protected] also works, but with big delays - where it is available!) *** You can help in the development of 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 video according to your requests. Thank you for your help, friends! *** Video materials: https://drive.google.com/drive/folder... Video links: "GU17 VAC, THD, IMD, AFC" ( • GU17 VAC, THD, IMD, AFC ) "6N23P VAC THD IMD AFC" ( • 6N23P VAC THD IMD AFC ) "Push-pull amplifier on GU17 and 6N23P" ( • Push-pull amplifier on GU17 and 6N23P ) "Phase inverter - input stage of PP audio amplifier" ( • Phase inverter - input stage of PP ampli... ) "Radio tubes VAC THD IMD AFC" • Radio tubes VAC THD IMD AFC Playlist "Non-audio tubes in an audio amplifier" • Non-audio tubes in an audio amplifier. "Vacuum tube PP push-pull audio amplifiers" • 6F5P - Push-pull amplifier. Part 2 "Guitar amplifiers" Signal generator module https://aliexpress.ru/item/1005006693... 00:00 Welcome to the "Unknown Physics" Channel! 00:06 Guitar amplifier on GU-17 radio tubes. 00:34 Getting to know the radio tube and amplifier. 00:58 The VA characteristic family of the GU-17 radio tube. 01:52 Formulas for an ideal transformer. 02:26 Calculation of a transformer for a tube amplifier. 03:48 Original amplifier circuit. 03:58 Test circuit of the amplifier - voltage and current map. 04:33 External view of the amplifier and transformer TN-46 layout. 05:12 Digression from the topic - functional generators. 09:37 Outputs of the phase inverter of the test amplifier. 10:21 Comparison of the standard TVZ and the tested TN-46 on 8 Ohm loads. 11:06 THD test of the amplifier on the GU-17 with TN-46. 11:54 Changing the transformation ratio of the output audio transformer. 12:29 Comparison of results from changing the transformation ratio. 12:45 IMD test of the amplifier on the GU-17 with TN-46. 13:11 Frequency response of the amplifier on the GU-17 with TN-46. 14:21 About the psychophysics of human hearing. 15:22 Frequency response of a classic guitar amplifier. 15:41 Appearance of the amplifier layout and the TAN-31 transformer. 15:59 THD test of the amplifier on the GU-17 with TAN-31. 17:03 IMD test of the amplifier on the GU-17 with TAN-31. 17:35 Frequency response of the amplifier on the GU-17 with TAN-31. 18:37 External view of the amplifier layout and the TA-163 transformer. 18:55 THD test of the amplifier on the GU-17 with TA-163. 19:52 IMD test of the amplifier on the GU-17 with TA-163. 20:16 Frequency response of the amplifier on the GU-17 with TA-163. 21:05 External view of the amplifier layout and the TVZ 66RR transformer. 21:42 THD test of the amplifier on the GU-17 with TVZ 66RR. 22:53 IMD test of the amplifier on the GU-17 with TVZ 66RR. 23:30 Frequency response of the amplifier on the GU-17 with TVZ 66RR. 24:13 Comparison of THD test results of different transformers. 25:10 Comparison of frequency response of different transformers. 26:22 On the use of industrial power transformers as TVZ. 26:57 Amplifier on paired radio tubes GU-17 - SOON! #GU17 #Output_Sound_Transformer #Tube_Sound #6N23P 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! **************************************************************** LINKS to the channel's videos are posted on personal pages in social networks and in groups: Add me as a FRIEND! (When adding, PLEASE write - where are you from and on what issue) e-mail: [email protected] VKontakte: http://vk.com/afon2015 Odnoklassniki: https://goo.gl/VdSsCY Twitter: / afanasy83 Facebook: / afanasy83 Skype: afanasy83