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    Hi. Renases was started by Hitachi and Mitsubishi. I would be happy to take a look at the file and look for a 2SJ74 replacement. Send me the file.
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    You're welcome. I miss engineering.
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    MJE180G/MJE170G look like good replacements for the 2SAa634/2SC1096.
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    I would use the BC547/BC557, to be a little safer, and it looks like mouser has them. The Sankens will work for the output transistors. The MJ11022/MJ11023 or MJ11024/MJ11025 in place of the 2SA634 and 2SC1096 doesn't make sense. They are darlington transistors, and the originals are not. I will look for suitable ones and send another post later.
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    I'm not sure which design you are asking about now. A BJT will not usually work in place of the 2SJ74. Will study.
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    I have never built an open baffle design. They tend to be large with a low SAF, spousal approval factor. I have read about them and have some understanding of them.
  7. View Conversation
    I think that the ideal application for the Sanken transistors, with very high voltage rating but not so high current rating, is using them in parallel in a very high power design. When I searched for designs using them, that is mostly what I found. A design that I would guess that you would be interested in, and that they should work well in, is the Hiraga 30W design, The Sanken FETs have enough voltage, current and power for this design, and this design is insensitive to the speed of the output transistors.
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    Maybe we should take our conversation off of the forum. I found a schematic for the Bride of Zen preamp, Is this the one that you want to build? The only transistor in it is the IRF610. This is available.
Showing Visitor Messages 1 to 10 of 10
About foton

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About foton
Date of injury (NA if not spinal-injured)?:
Northern VA
IT engineer
Photography, electronics (audio), art
I am T12 complete para.
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