Hiraga Class-A - Page 2

tschrama · 12th July 2001, 08:40 PM

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 )

chrs,
thijs

phil · 13th July 2001, 07:07 AM

Jos
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.
Phil

Geoff · 15th July 2001, 02:24 PM

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?

Geoff

Jason Hubbard · 17th July 2001, 04:14 PM

Geoff,

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.

Geoff · 17th July 2001, 04:58 PM

Jason

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).

Geoff.

17th July 2001, 04:14 PM	#14
Jason Hubbard diyAudio Member Join Date: Apr 2001 Location: Poole, England	Electronics World, Class A SE Geoff, 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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12th July 2001, 08:40 PM	#11
tschrama diyAudio Member 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 ) chrs, thijs

13th July 2001, 07:07 AM	#12
phil diyAudio Member Join Date: May 2001	Jos 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. Phil

15th July 2001, 02:24 PM	#13
Geoff diyAudio Member Join Date: Apr 2001 Location: UK	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? Geoff

17th July 2001, 04:58 PM	#15
Geoff diyAudio Member Join Date: Apr 2001 Location: UK	Jason 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). Geoff.