用的广为流传的矿坛朱院长的图,因为变压器次级电压高,改成胆整流,最初用5Z4P,开始在单位调试的很好,接上假负载烤机陆续烧坏了4只4P1S,具体现象是阴极电压直线上升,烧阴极电阻阴极电容,观察后得出结论正常上班时没事,一切都正常,下班前后及晚上单位设备关闭用电少220V接近235V时,B+电压高(260-270V)左右,家里测量电压白天晚上都是在232-235之间,索性换成5Z2P胆整流,5Z2P内阻大,比5Z4P电压低30V左右。至此开机几十个小时,再没有坏过4P1S,也可能坏的那几个品质不佳。先上图,红色数值是实际制作的工作点。机壳是自己做的,单位烤的漆,电源是自己改的,灯丝5V、4.8V*3组,灯丝整流滤波后电阻降压。
4P1S真心不错,最近做了推挽,又做了这个单端。夏日炎炎,听着也不烦躁,优美动听。
废话不多说,上图。
![](http://tiebapic.baidu.com/forum/w%3D580/sign=10927901358da9774e2f86238051f872/580c4d086e061d9550798d0a3df40ad162d9cad7.jpg?tbpicau=2024-09-17-05_9a7f24fc1a6895454676ec9e62efb79e)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=beb6c5ef68738bd4c421b239918b876c/a62110dfa9ec8a130725edd2b103918fa0ecc0d7.jpg?tbpicau=2024-09-17-05_e112d9f5ef901aa0138e2bd45423b33c)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=557855b60ced2e73fce98624b701a16d/03de562c11dfa9ece911ec2524d0f703918fc1d7.jpg?tbpicau=2024-09-17-05_a531a2b5332716de5ffc66f660b65c3e)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=473a9032af24b899de3c79305e061d59/d79a58ee3d6d55fbddf9cc142b224f4a20a4ddd7.jpg?tbpicau=2024-09-17-05_f367aa2bec12d5266797ec99d80e3927)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=2a2e9eddefec8a13141a57e8c7039157/fdfed6ca7bcb0a468f1d310b2d63f6246b60afd7.jpg?tbpicau=2024-09-17-05_821d4f6444b9595580bbd4831011993d)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=25ee87f8173d26972ed3085565fbb24f/9a6d0d338744ebf89f4ede0d9ff9d72a6059a7d7.jpg?tbpicau=2024-09-17-05_207dd4bd60c9ed2dfa6ea29bb1c60ea5)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=3ef9cc142b224f4a5799731b39f79044/26276159252dd42aa436bb99453b5bb5c9eab8d7.jpg?tbpicau=2024-09-17-05_266d3304946bc3ef37a1e84435639d67)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=0c20fd0c4af3d7ca0cf63f7ec21fbe3c/38e714ce36d3d5392202b5f17c87e950352ab0d7.jpg?tbpicau=2024-09-17-05_92e450a3c06f81a6f6349b105708271d)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=681d310b2d63f6241c5d390bb744eb32/cb8ae850352ac65c8a3adc41bdf2b21193138ad7.jpg?tbpicau=2024-09-17-05_915b5cd121badb10312c8cd9ddead6cd)
4P1S真心不错,最近做了推挽,又做了这个单端。夏日炎炎,听着也不烦躁,优美动听。
废话不多说,上图。
![](http://tiebapic.baidu.com/forum/w%3D580/sign=10927901358da9774e2f86238051f872/580c4d086e061d9550798d0a3df40ad162d9cad7.jpg?tbpicau=2024-09-17-05_9a7f24fc1a6895454676ec9e62efb79e)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=beb6c5ef68738bd4c421b239918b876c/a62110dfa9ec8a130725edd2b103918fa0ecc0d7.jpg?tbpicau=2024-09-17-05_e112d9f5ef901aa0138e2bd45423b33c)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=557855b60ced2e73fce98624b701a16d/03de562c11dfa9ece911ec2524d0f703918fc1d7.jpg?tbpicau=2024-09-17-05_a531a2b5332716de5ffc66f660b65c3e)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=473a9032af24b899de3c79305e061d59/d79a58ee3d6d55fbddf9cc142b224f4a20a4ddd7.jpg?tbpicau=2024-09-17-05_f367aa2bec12d5266797ec99d80e3927)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=2a2e9eddefec8a13141a57e8c7039157/fdfed6ca7bcb0a468f1d310b2d63f6246b60afd7.jpg?tbpicau=2024-09-17-05_821d4f6444b9595580bbd4831011993d)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=25ee87f8173d26972ed3085565fbb24f/9a6d0d338744ebf89f4ede0d9ff9d72a6059a7d7.jpg?tbpicau=2024-09-17-05_207dd4bd60c9ed2dfa6ea29bb1c60ea5)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=3ef9cc142b224f4a5799731b39f79044/26276159252dd42aa436bb99453b5bb5c9eab8d7.jpg?tbpicau=2024-09-17-05_266d3304946bc3ef37a1e84435639d67)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=0c20fd0c4af3d7ca0cf63f7ec21fbe3c/38e714ce36d3d5392202b5f17c87e950352ab0d7.jpg?tbpicau=2024-09-17-05_92e450a3c06f81a6f6349b105708271d)
![](http://tiebapic.baidu.com/forum/w%3D580/sign=681d310b2d63f6241c5d390bb744eb32/cb8ae850352ac65c8a3adc41bdf2b21193138ad7.jpg?tbpicau=2024-09-17-05_915b5cd121badb10312c8cd9ddead6cd)