Bought Bob Cordell's new book from amazon.
Came across another book that's 39 years old.
At under $10, thought what could it hurt?
On the back cover it mentions vfets.
In the book,it states, vfets will be used more widely than BJT in the future. Too bad it wasn't so. 🙂
Came across another book that's 39 years old.
At under $10, thought what could it hurt?
On the back cover it mentions vfets.
In the book,it states, vfets will be used more widely than BJT in the future. Too bad it wasn't so. 🙂
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That's pretty cool Vince. I'll have to track down a copy.
Were any specific parts mentioned?
Dennis
Were any specific parts mentioned?
Dennis
Good question.
You would think I would have looked, but only looked around briefly and then started reading about biasing.
What is also interesting is a few simple schematics with transformers in the signal path.
You would think I would have looked, but only looked around briefly and then started reading about biasing.
What is also interesting is a few simple schematics with transformers in the signal path.
What is also interesting is a few simple schematics with transformers in the signal path.
And much more haha ..It's one appetizer ?
Good book finds, have fun Vince 🙂 Best regards
What I was surprised about when I got the Douglas Self book was that he don't like FETs. So not much to learn regarding FETs in his book……..maybe I should look for the antique book mentioned here.
Self argue that degenerated BJTs are much more linear compared to degenerated FETs. Also Vgs mismatch he points out. Maybe he is right in generel terms and only a few FETs are really suited for audio amps…….but of course still a lot to learn from his book.
I remember when I got the book I was desperate looking for a FET symbol 🙂
Self argue that degenerated BJTs are much more linear compared to degenerated FETs. Also Vgs mismatch he points out. Maybe he is right in generel terms and only a few FETs are really suited for audio amps…….but of course still a lot to learn from his book.
I remember when I got the book I was desperate looking for a FET symbol 🙂
Were any specific parts mentioned?
From reading the bit about VFETs in Audio Amolifers chapter, no VFET models are mentioned. There is a quasi-complimentary and complimentary simplified schematic for push-pull vfet amp.
maybe I should look for the antique book mentioned here
Although it's probably not a bad little reference and does go well into how things work, the Horowitz book talk mainly about BJT, JFETs and to a small degree VFETs. MOSFETs are not really talked about.
I don't think G. Randy Sloan like FETs either. He's more very interested in vanishingly low distortion numbers. Bob Cordell's book seems to offer great amount of info around MOSFETs. Bob's book is arriving tonight. 🙂
Bob Cordell's book is interesting. About 100 USD here and a bit cheaper as E-book.....maybe it will be my first E-book. It will be easier to search a specific topic…..
Is the "problem" with FETs that the really good ones are not made anymore?
Like the SemiSouth, Toshiba, Sony VFET etc?
Then we use the "usually suspects" like J113, IRFPXXX and maybe LSKXXX?
The LSK is quite expensive even that they are produced today. The 2SK's was quite cheap when they were produced long time ago?
Like the SemiSouth, Toshiba, Sony VFET etc?
Then we use the "usually suspects" like J113, IRFPXXX and maybe LSKXXX?
The LSK is quite expensive even that they are produced today. The 2SK's was quite cheap when they were produced long time ago?
After about 22 years working with Bipolars, I switched to Fets, and have not looked back.
Did mosfet amplifiers become more popular in the mid 80s?
A Horowitz under $10!!!
How to design and build audio amplifiers, including digital circuits by Horowitz, Mannie, 1980 can be had from Amazon or ABE for under $20.
https://www.amazon.com/Design-Amplifiers-Including-Digital-Circuits/dp/0830612068
9780830612062: How to Design and Build Audio Amplifiers, Including Digital Circuits - AbeBooks - Mannie Horowitz: 0830612068
A *limited* view can be read online at innernet Archive:
How to design and build audio amplifiers, including digital circuits : Horowitz, Mannie : Free Download, Borrow, and Streaming : Internet Archive
Amazon says I bought a copy in 2014 (for $6). Also its predecessor for a penny. I do not remember either one.
Amplifiers using lateral Mosfets started becoming popular in the early 80s. The Hafler DH-200 and DH-220 sold pretty well. They were very reasonably priced, especially in kit form. There were other makes that were introduced in the mid 80s, including the Aragon 4004 and the B&K ST-140, which were quite popular.
Now I have also ordered a used Horowitz at Amazon and I have the Cordell as E-book. It is quite nice to have it as E-book. Easy to browse around…..
About Horowitz.....there was also one which was quite good at playing piano...….
About Horowitz.....there was also one which was quite good at playing piano...….
Received Cordell's book last night.
I'm amazed about the amount of information, knowledge and work.
Staggering.
I'm amazed about the amount of information, knowledge and work.
Staggering.
Yes, I read a little about Zobel networks.....we never see those on Nelson amps......probably because they are stable in all impedances......
Yes, I read a little about Zobel networks.....we never see those on Nelson amps
Funny, I was thinking the same thing looking at both books. 😀
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