请教电子管8122如何测试好坏（附资料） [复制链接]

不带电的情况下用万用表或者lc表能否测试？

不带电的情况下，不能测试.

reactivaton






to avoid flashover in a new or a long time unused tube, it is prudent to prepare ("reactivate") it for his task. there are various opinions and solutions how to do it, but with a gu-43 it can be relatively simple. a dc of 10 to 15 v is sufficient for the tube to draw 900 ma as the grids are connected to the anode. heat the tube 30 minutes with a filament voltage of 12.6 v. then supply a "high voltage" of about 15 v and set the voltage to a current of 900 ma. if possible use a current limiter, because during reactivate the current can increase suddenly so that continue monitoring could be necessary to maintain 900 ma. usually i will not reactivate longer than an hour or so. soon you will find out at which voltage a good tube drawn 900 ma (or 800 ma/12-12.5 v) so you have an indication if another tube is better or not.

http://www.hellocq.net/forum/showthread.php?p=3498754&posted=1#post3498754

谢谢朱老师，英文看不明白，好像是说要激活管子？朱老师有没有这个管子相关的功放资料？

我也有一只8211和座

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谢谢朱老师，英文看不明白，好像是说要激活管子？朱老师有没有这个管子相关的功放资料？

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http://ncl-2000.n9efj.net/ncl2knewman.html

谢谢朱老师，我消化消化，不明白再想你请教。