the final form of the prototype and its circuit diagram
LKA Member Joined 2014 2021-09-21 10:45 am #81 2021-09-21 10:45 am #81 the final form of the prototype and its circuit diagram Attachments Le-Xa-N-bufv2-fin4.jpg 963.5 KB · Views: 927 LeXaN Buffer v2.0.4.JPG 471.4 KB · Views: 956 ••• More options Share moschfet Member Joined 2008 xipix.de/ 2021-09-22 1:42 am #82 2021-09-22 1:42 am #82 Congratulations, absolutely great! ••• More options Share J jxdking Member Joined 2009 2021-09-22 10:48 am #83 2021-09-22 10:48 am #83 I never thought this topology could be such low distortion by it alone, considering there is only about 60dB NFB around output transistors. ••• More options Share P printnik Member Joined 2018 2022-01-05 10:37 am #84 2022-01-05 10:37 am #84 Low distortion + soft tube limitation. Attachments lexan-classAB5.asc 19.6 KB · Views: 80 Cordell-Models-ext.txt 20.5 KB · Views: 74 LEXAN AB + Soft clip.jpg 524.9 KB · Views: 204 ••• More options Share LKA Member Joined 2014 2022-01-05 5:01 pm #85 2022-01-05 5:01 pm #85 NICE ! AB mode I tried only once. It began oscillate and the output transistors burned. I didn't deal with it since. ••• More options Share P printnik Member Joined 2018 2022-01-06 11:07 am #86 2022-01-06 11:07 am #86 In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out. Attachments LEXAN AB Faza.jpg 372.7 KB · Views: 146 lexan-classAB5.asc 19.6 KB · Views: 68 ••• More options Share LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share Prev 1 2 3 4 5 First Prev 5 of 5 Go to page Go Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link Home Amplifiers Solid State Low distortion current driven Class-B output stage
moschfet Member Joined 2008 xipix.de/ 2021-09-22 1:42 am #82 2021-09-22 1:42 am #82 Congratulations, absolutely great! ••• More options Share J jxdking Member Joined 2009 2021-09-22 10:48 am #83 2021-09-22 10:48 am #83 I never thought this topology could be such low distortion by it alone, considering there is only about 60dB NFB around output transistors. ••• More options Share P printnik Member Joined 2018 2022-01-05 10:37 am #84 2022-01-05 10:37 am #84 Low distortion + soft tube limitation. Attachments lexan-classAB5.asc 19.6 KB · Views: 80 Cordell-Models-ext.txt 20.5 KB · Views: 74 LEXAN AB + Soft clip.jpg 524.9 KB · Views: 204 ••• More options Share LKA Member Joined 2014 2022-01-05 5:01 pm #85 2022-01-05 5:01 pm #85 NICE ! AB mode I tried only once. It began oscillate and the output transistors burned. I didn't deal with it since. ••• More options Share P printnik Member Joined 2018 2022-01-06 11:07 am #86 2022-01-06 11:07 am #86 In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out. Attachments LEXAN AB Faza.jpg 372.7 KB · Views: 146 lexan-classAB5.asc 19.6 KB · Views: 68 ••• More options Share LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share Prev 1 2 3 4 5 First Prev 5 of 5 Go to page Go Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
J jxdking Member Joined 2009 2021-09-22 10:48 am #83 2021-09-22 10:48 am #83 I never thought this topology could be such low distortion by it alone, considering there is only about 60dB NFB around output transistors. ••• More options Share P printnik Member Joined 2018 2022-01-05 10:37 am #84 2022-01-05 10:37 am #84 Low distortion + soft tube limitation. Attachments lexan-classAB5.asc 19.6 KB · Views: 80 Cordell-Models-ext.txt 20.5 KB · Views: 74 LEXAN AB + Soft clip.jpg 524.9 KB · Views: 204 ••• More options Share LKA Member Joined 2014 2022-01-05 5:01 pm #85 2022-01-05 5:01 pm #85 NICE ! AB mode I tried only once. It began oscillate and the output transistors burned. I didn't deal with it since. ••• More options Share P printnik Member Joined 2018 2022-01-06 11:07 am #86 2022-01-06 11:07 am #86 In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out. Attachments LEXAN AB Faza.jpg 372.7 KB · Views: 146 lexan-classAB5.asc 19.6 KB · Views: 68 ••• More options Share LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share Prev 1 2 3 4 5 First Prev 5 of 5 Go to page Go Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
I never thought this topology could be such low distortion by it alone, considering there is only about 60dB NFB around output transistors.
P printnik Member Joined 2018 2022-01-05 10:37 am #84 2022-01-05 10:37 am #84 Low distortion + soft tube limitation. Attachments lexan-classAB5.asc 19.6 KB · Views: 80 Cordell-Models-ext.txt 20.5 KB · Views: 74 LEXAN AB + Soft clip.jpg 524.9 KB · Views: 204 ••• More options Share LKA Member Joined 2014 2022-01-05 5:01 pm #85 2022-01-05 5:01 pm #85 NICE ! AB mode I tried only once. It began oscillate and the output transistors burned. I didn't deal with it since. ••• More options Share P printnik Member Joined 2018 2022-01-06 11:07 am #86 2022-01-06 11:07 am #86 In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out. Attachments LEXAN AB Faza.jpg 372.7 KB · Views: 146 lexan-classAB5.asc 19.6 KB · Views: 68 ••• More options Share LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share Prev 1 2 3 4 5 First Prev 5 of 5 Go to page Go Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
LKA Member Joined 2014 2022-01-05 5:01 pm #85 2022-01-05 5:01 pm #85 NICE ! AB mode I tried only once. It began oscillate and the output transistors burned. I didn't deal with it since. ••• More options Share P printnik Member Joined 2018 2022-01-06 11:07 am #86 2022-01-06 11:07 am #86 In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out. Attachments LEXAN AB Faza.jpg 372.7 KB · Views: 146 lexan-classAB5.asc 19.6 KB · Views: 68 ••• More options Share LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share Prev 1 2 3 4 5 First Prev 5 of 5 Go to page Go Show hidden low quality content You must log in or register to reply here. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
NICE ! AB mode I tried only once. It began oscillate and the output transistors burned. I didn't deal with it since.
P printnik Member Joined 2018 2022-01-06 11:07 am #86 2022-01-06 11:07 am #86 In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out. Attachments LEXAN AB Faza.jpg 372.7 KB · Views: 146 lexan-classAB5.asc 19.6 KB · Views: 68 ••• More options Share LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share Prev 1 2 3 4 5 First Prev 5 of 5 Go to page Go Show hidden low quality content You must log in or register to reply here.
In such a scheme, there are no through currents between 2SA1837 and 2SC4793. The phase margin of 55 degrees. The output 30MHz transistors should not burn out.
LKA Member Joined 2014 2022-01-06 11:34 am #87 2022-01-06 11:34 am #87 I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help. ••• More options Share
I know, it shouldn't. It works well in the simulator. I'll try to recompensate it, or maybe a new pcb will help.
