Amplifier Topologies

jam · 17th March 2004, 04:30 PM

Do you have any particular topology or design you like. Please post it here and any reasons why you care for the design. Maybe our resident guru's (Pass, Curl and Hansen) would join in and share their ideas.

My entry............

subwo1 · 17th March 2004, 05:51 PM

Do simulated only circuits count? Or are you interested in only built and proven amps?

jam · 17th March 2004, 06:49 PM

Simulated circuits do count but there is nothing like a working unit because simulations don't always tell the whole story, but any ideas are welcome.

Regards,
Jam

Nelson Pass · 17th March 2004, 07:09 PM

You don't have to build or simulate them to make them
interesting, but I suggest that you keep them relatively
simple, so that the point of the topology is visible to
most.

jam · 17th March 2004, 07:24 PM

Good point Mr.Pass,so here goes..................comments.

Nelson Pass · 17th March 2004, 07:51 PM

Your input ground is attached to the negative rail.

subwo1 · 17th March 2004, 08:01 PM

I removed the diode and got better performance. With it in, the clipping was premature on the positive peaks, while without it the situation was better. Could you explain what the diode does?
Overall, not bad I think for just one gain stage.

mwh-eng · 17th March 2004, 08:06 PM

Is there a connection at the bottom 470 ohms and the cathod of CR470?

jam · 17th March 2004, 08:09 PM

In the original the input is transformer coupled.

http://perso.wanadoo.fr/jm.plantefeve/Gibouin.html

hope you can read French. Has anyone built this?

Regards,
Jam

mwh-eng the answer is no.

jam · 17th March 2004, 08:15 PM

CR470 is a current diode.

http://www.datasheetcatalog.com/datasheet/C/CR470.shtml

17th March 2004, 05:51 PM	#2
subwo1 diyAudio Member Join Date: Jan 2002 Location: North American Continent	Do simulated only circuits count? Or are you interested in only built and proven amps? __________________ USMPS http://groups.yahoo.com/group/switchmode/

17th March 2004, 08:01 PM	#7
subwo1 diyAudio Member Join Date: Jan 2002 Location: North American Continent	I removed the diode and got better performance. With it in, the clipping was premature on the positive peaks, while without it the situation was better. Could you explain what the diode does? Overall, not bad I think for just one gain stage. __________________ USMPS http://groups.yahoo.com/group/switchmode/

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17th March 2004, 06:49 PM	#3
jam diyAudio Member Join Date: May 2001 Location: Charlotte,NC,USA	Simulated circuits do count but there is nothing like a working unit because simulations don't always tell the whole story, but any ideas are welcome. Regards, Jam

17th March 2004, 07:09 PM	#4
Nelson Pass The one and only Join Date: Mar 2001	You don't have to build or simulate them to make them interesting, but I suggest that you keep them relatively simple, so that the point of the topology is visible to most.

17th March 2004, 07:51 PM	#6
Nelson Pass The one and only Join Date: Mar 2001	Your input ground is attached to the negative rail.

17th March 2004, 08:06 PM	#8
mwh-eng diyAudio Member Join Date: Feb 2004 Location: Livingston, Montana	Is there a connection at the bottom 470 ohms and the cathod of CR470?

17th March 2004, 08:09 PM	#9
jam diyAudio Member Join Date: May 2001 Location: Charlotte,NC,USA	In the original the input is transformer coupled. http://perso.wanadoo.fr/jm.plantefeve/Gibouin.html hope you can read French. Has anyone built this? Regards, Jam mwh-eng the answer is no.

17th March 2004, 08:15 PM	#10
jam diyAudio Member Join Date: May 2001 Location: Charlotte,NC,USA	CR470 is a current diode. http://www.datasheetcatalog.com/datasheet/C/CR470.shtml

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