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First cycle distortion - Graham, what is that?
First cycle distortion - Graham, what is that?
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Old 6th January 2021, 06:42 PM   #1061
Hierfi is offline Hierfi  Canada
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Quote:
Originally Posted by stinius View Post
OMG
This is probably the most meaningless thread I have ever seen since...

Stein
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Is this coming from a blissful true prophet that ignorance is bliss?
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Old 6th January 2021, 07:47 PM   #1062
stinius is offline stinius
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Please quote the whole post.
I remember you from the "CFA" thread.
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Old 6th January 2021, 08:19 PM   #1063
Hierfi is offline Hierfi  Canada
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The "CFA" thread was incredibly controversial and personally challenging, and that from my perspective was most succinctly understood and conveyed by CPaul.
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Old 7th January 2021, 07:03 AM   #1064
petr_2009 is offline petr_2009  South Korea
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GEM amplifier circuit and its Bode diagram
Attached Images
File Type: png GEM_SCH.png (40.6 KB, 190 views)
File Type: png GEM_Bode_.png (19.9 KB, 187 views)
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Old 7th January 2021, 08:37 AM   #1065
forr is offline forr  France
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Quote:
Originally Posted by stinius View Post
This is probably the most meaningless thread I have ever seen since the: Current Feedback Amplifiers, not only a semantic problem?
Thread
Stein
Quote:
Originally Posted by Hierfi View Post
The "CFA" thread was incredibly controversial and personally challenging, and that from my perspective was most succinctly understood and conveyed by CPaul.
Being the creator of thread "Current Feedback Amplifiers, not only a semantic problem?", I may say that I am very far from having said my last word about about CFAs.
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Old 7th January 2021, 03:23 PM   #1066
Hierfi is offline Hierfi  Canada
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Initializing that post is something to be proud of... particularly given its length. Congrats.
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Old 7th January 2021, 03:43 PM   #1067
traderbam is offline traderbam  Canada
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Length isnít everything.
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Old 7th January 2021, 07:05 PM   #1068
SSassen is offline SSassen  Netherlands
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Originally Posted by traderbam View Post
Length isnít everything.
I'm told girth is where it is at, but what do I know?
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Old 8th January 2021, 08:25 AM   #1069
petr_2009 is offline petr_2009  South Korea
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In memory of Graham

Graham really liked the sound of amplifiers with very low signal transit time (time Propagation Delay), in particular the sound of the JLH-69 class A amplifier.

Graham named his GEM amplifier after his father and used the LJH-69 amplifier circuit as a prototype.

Design goal: to make a more powerful and more economical amplifier while maintaining the properties of the JLH-69 amplifier
Here is one of the simplified versions of such an amplifier.
Attached Images
File Type: png GEM-100_1W_10kHz-spectr.png (73.7 KB, 120 views)
File Type: png GEM-100_10kHz-spectr.png (74.2 KB, 118 views)
File Type: png GEM-100_Bode.png (21.7 KB, 115 views)
File Type: png GEM-100_Loop-Gain_C-Load.png (56.8 KB, 20 views)
File Type: png GEM-100_IMD_19-20kHz.png (30.7 KB, 17 views)
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Old 8th January 2021, 08:39 AM   #1070
jan.didden is offline jan.didden  Europe
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I see this now has it's own thread. Good idea, we can put this one to rest then.

The GEM amplifier

Jan
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