EL156/6G-B8 Single Ended Amplifer DIY

EL156/6G-B8 Single Ended Amplifer DIY

conter started 10th Feb 2024

  

EL156 Single Ended Amplifier ここから製作が始まります

この真空管はバイアスが大変低いのです。-6Vのバイアスに対してのプレート電圧は300V前後になります。特性的には-18V程度の電圧では極性からKT88などのプレート電圧と同じ様な値の350V程度になります。
それで自己バイアスとして定格の160Ωに設定します。結局はKT88などと同じになります。170Ω　程度に落ち着きます。-6ですが実際は390Ωあたりになります。Cut and Tryとなると思います。
回路図はまだ決まっていません、LV-60と同じ回路が良いと思います。プレート電圧が低い場合はECC88一段で十分と思います。プレート電圧が高い場合はカソードフォロワーが良いと思います。
この回路だと20W以上は出ると思います。
Translate by Google.
This tube has a very low bias. The plate voltage for a -6V bias will be around 300V. Characteristically, at a voltage of about -18V,
the voltage will be about 350V, which is the same value as the plate voltage of KT88 etc. due to the polarity.
So set the self-bias to the rated 160Ω. In the end it will be the same as KT88 etc. It settles down to around 170Ω. -6,
but it is actually around 390Ω. I think it will be Cut and Try.
The circuit diagram has not been decided yet, but I think the same circuit as the LV-60 will be good. If the plate voltage is low, I think one stage ECC88 is sufficient.
I think a cathode follower is better if the plate voltage is high.
I think this circuit will output more than 20W. this amplifier can be use EL34 6550 KT88 KT90 EL156 6GB8 KT120 and 6V6

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Lay out of Amplifier 2024 Feb

New Schematic Diagram EL156 6G-B8 Single　Ended Amplifier on 2024

for EL156/EL33/6GB8 Single Ended Amplifier. FW24WS-2 finemet audio transformer pair 152000Yen/ USD $1000dollars when 145Yen Rate

This one has 7Kohms impedance wound and 4 Ω　OUT PUT

Since on 19th May 2014 and update 22nd March Yachiyo Chiba Japan

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