Para Feed Single Ended Amplifier by EL84

EL84 Para Feed Single Ended Amplifier
6BQ5  EL84 Para Feed Single Ended Amplifier DIY
🇯🇵Japanese

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this counter started 28th Mar 2021


The amplifier made in China is made very beautifully, but please think that the performance is about 1/10.
The self-made amplifier is not beautiful, but its performance is several times higher than that made in China.

It's about the amplifier. : At first it was PMF-5WS, but KA054B57T came out of the parts box,
so I will make it with this. Then switch. This transformer has a maximum of 13H and PMF-5WS has a maximum of 18H.
However, it seems that the PMF-5WS does not have so much inductance when measured by Onnyo. As for the size, the KA57 has a smaller core, and if you use a thin wire to wind it in a sandwich, I think that the performance will improve in Kasuga.
I will use a naked transformer this time, but if I have an order, I plan to use a sealed PMF-5WS-TB. Kasuga's transformer is a very small transformer.
These transformers were purchased for some reason a few years before the Corona incident.
It is a thing.


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EL84 Single Ended Amplifier DIY



para  feed   kasuga trans

Amplifier is just this one like. Transformer is PMF-5WS or KA-054B57T By Kasuga Trans



schematic

Scemetic diagram for Para Feed




PMF-5WS  TB

PMF 5WS by General Transformer Sales Co Japan made and new product PMF-5WS-TB



6BQ5

3 of them are same charactor but 7189 is a little bit higer power

















































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last up date 22nd Sep 2021
Hand Made Amplifier Located Sakura Chiba Japan

©  Mizushima Audio Laboratory Japan