Cascomp (compensated cascode)

[robydream]

Does anyone have a reference or schematic of Cascomp input stage?

I would like to make input stage for my amplifier so if example could be given to simulate it it LTSpice and then build a real project.

Cascomp was invented by Patrick Quinn, as far i read theory this is the most perfect for input stage becuse it has excellent linearity, high bandwith and indirect error sensing and feedforward error correction.

Could some one give a try to give example?

Thanks.

 

[AndrewT]

cascomp

There are 17 other Threads that mention cascomp.
Two are very long, use the search this thread facility. The other 15 Threads should be easy to search through.

 

[tiefbassuebertr]

check out this URLs:
http://www.freepatentsonline.com/4146844.pdf
http://books.google.de/books?id=CFo...AEwAA#v=onepage&q=cascomp "Pat Quinn"&f=false
http://books.google.de/books?id=uoj...AEwAQ#v=onepage&q=cascomp "Pat Quinn"&f=false
Post #79, #80 about
http://www.diyaudio.com/forums/solid-state/172532-negative-feedback-distortion-8.html
–³‘èƒhƒLƒ…ƒ�ƒ“ƒg
http://www.diyaudio.com/forums/solid-state/64482-cross-quad-cascomp-circuits.html
High frequency differential amplifier with adjustable damping factor
mcdb's blog: ?????no-58 Cas-Comp
mcdb's blog: 201012
http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?reload=true&arnumber=1052028

There are 17 other Threads that mention cascomp.
Two are very long, use the search this thread facility. The other 15 Threads should be easy to search through.

Unfortunately you don't mentioned the associated URLs.

 

[robydream]

Thanks...i will now enter circuit into ltspice and post here results...it will be very interesting circuit....

 

[AndrewT]

Unfortunately you don't mentioned the associated URLs.

They are all here on DIYaudio.
Note I said Threads.

 

[rcw666]

From what I remember that type of circuit can only linearize up to an input of one Vbe drop, I have sen a modification that can go up to two.
Just using emitter resistors is nearly as good.
rcw

 

[robydream]

Great...can you post example circuit...that can we enter into LTSpice and simulate it? I have enter Quinns pattent into LTSpice...but voltage drop and linearity is not so good...so modified circuit is welcome...

 

[sreten]

Distortion In Power Amplifiers

rgds, sreten.