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Hiraga Class-A
Hiraga Class-A
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Old 12th July 2001, 08:40 PM   #11
tschrama is offline tschrama  Netherlands
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Join Date: Jul 2001
Location: The Netherlands
Thanks drakonis for the link!

I've been spending alot of time with circuitmaker 2000 demo
and like it alot..I've you got time to spare, visit my webside : http://home.zonnet.nl/tschrama/owndesign.html

The last schematic looks like a Hiraga amp.. but I don't know for shure ... It simulates a little tooo perfect..Any
comments are apriciated...(please don't comment my English, I know, I know )


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Old 13th July 2001, 07:07 AM   #12
phil is offline phil
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If you are reading this I tried to email you with details of my JLH amp but the email bounced back. Please send me your current email address.
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Old 15th July 2001, 02:24 PM   #13
Geoff is offline Geoff  United Kingdom
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The translation of Part 3 (The Final Design) of the Hiraga 20W Class-A article has now been added to my site. Now all I need is a copy of Parts 1 and 2 (l'Audiophile Nos 10 and 11). Can anyone help, please?

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Old 17th July 2001, 04:14 PM   #14
Jason Hubbard is offline Jason Hubbard  United Kingdom
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Location: Poole, England
Default Electronics World, Class A SE


Electronics world did an article recently by Colin Wonfor about bipolar class A SE amplifiers - i recall the design was modular and catered for powers from about 50 to 300 watts.

I have a copy of the magazine if the article is of interest to you.
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Old 17th July 2001, 04:58 PM   #15
Geoff is offline Geoff  United Kingdom
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Thanks for the offer, but I already have a copy of the article. For anyone else who may be interested, the article can be found in the March 1999 issue of Electronics World. As you say, it is a Class-A single-ended modular design catering for outputs from 20W to 300W into 4 or 8 ohm. The majority of the amp is BJT but the output device a MOSFET (well, in reality, a number of paralleled MOSFETs - between 5 and 30).


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