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    foton,
    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.
  5. View Conversation
    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
    foton,
    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, http://diyaudioprojects.com/Solid/Je...s-A-Amplifier/. The Sanken FETs have enough voltage, current and power for this design, and this design is insensitive to the speed of the output transistors.
  8. Visitor messages are public. Use the PM (Private Message) feature if you want to communicate with someone privately.

    (KLD)
  9. Strongly advise you to NOT post your personal e-mail address (or mailing address or phone number) on this public part of our forums. Posting that type of stuff here leaves you very vulnerable to spam spiders which collect e-mail addresses all over the internet, or even cyber-stalkers.

    You can exchange this information with legitimate members through the Personal Message (PM) function here.

    (KLD)
  10. View Conversation
    Hi,
    Maybe we should take our conversation off of the forum. I found a schematic for the Bride of Zen preamp, http://cygnus.ipal.org/mirror/www.pa...s/zenbrde1.jpg. 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

Basic Information

About foton
Date of injury (NA if not spinal-injured)?:
1986
Location:
Northern VA
Gender:
Male
Occupation:
IT engineer
Interests:
Photography, electronics (audio), art
Biography:
I am T12 complete para.
Why did you join this forum?:
Information exchange
How did you find us?:
Browsing the net
What do you think of this site?:
Really great

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