本帖最後由 billymud 於 2014-5-24 04:21 編輯
wingbut 發表於 2014-5-23 21:32 static/image/common/back.gif
師兄：想請教300b調整到0.60這個數是否正確？大過或小過有否其它影響？謝謝解答...
師兄, 因為it's二手返黎, those 300B's being used may not be the matched pairs; or being biased as designed.
Therefore, your DC test出耒系0.450.580.810.74 may be and may not be 正確 。
Without history,if u 調咗一樣,應該仲有more unfavorable問題!-->>大過或小過 would影響transformer output linearity.
The key point for u to do BIAS is to ensure the balance plate current flowing in each 300B at steady stage;
as they were operating in PUSH-PULL for ur enjoyment.
quoted/ kmc0907 said : " 其实無乜特别就唔好点調教." {:1_259:}
小第英文有限公司{:1_332:}
師兄：我睇吾明{:1_247:}
本帖最後由 billymud 於 2014-5-24 07:48 編輯
wingbut 發表於 2014-5-24 06:43 static/image/common/back.gif
師兄：我....
try .....
billymud 發表於 2014-5-24 07:46 static/image/common/back.gif
wingbut 發表於 2014-5-24 06:43
師兄：我....
{:1_253:} google translation....
又黎一部要調偏壓{:6_136:}
本帖最後由 billymud 於 2014-5-26 11:14 編輯
jastudio 發表於 2014-5-26 10:38 static/image/common/back.gif
又黎一部要調偏壓
your 300B is not Push-Pull vor~~
又要調 ?? {:1_339:}
jastudio 發表於 2014-5-26 10:35 static/image/common/back.gif
google translation....
hahah~~~{:1_339:} {:1_339:}
billymud 發表於 2014-5-26 11:12 static/image/common/back.gif
your 300B is not Push-Pull vor~~
又要調 ??
ching 我吾系講緊我自己部，同埋我部系auto bias。。。
只系見到另外有個thread 又問EL34pp 調偏壓問題。。。
jastudio 發表於 2014-5-26 11:20 static/image/common/back.gif
ching 我吾系講緊我自己部，同埋我部系auto bias。。。
只系見到另外有個thread 又問EL34pp 調偏壓問題。 ...
又問EL34pp 調偏壓問題。。。妖 !
google /search_post76la~~
billymud 發表於 2014-5-26 15:52 static/image/common/back.gif
又問EL34pp 調偏壓問題。。。妖 !
google /search_post76la~~
{:6_207:}佢未diy過，我有d擔心佢比電電親
(Post76 Android 手機版送出)
