SKU: 72861823376

High-fidelity circuit design

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Description

High-fidelity circuit designCrowhurst and Cooper wrote many high fidelity design articles for Radio Electronics in the early 1950 ies. Gernsback had the original authors edit, rewrite and assemble them into this book. The aim was to provide design information for the enthusiast without much formal education, as well for those with advanced understanding of the subjects, but needing some help to visualize problems in tube based Hi Fi design. Sixty years later, we have better

Crowhurst and Cooper wrote many high fidelity design articles for Radio-Electronics in the early 1950-ies. Gernsback had the original authors edit, rewrite and assemble them into this book.
The aim was to provide design information for the enthusiast without much formal education, as well for those with advanced understanding of the subjects, but needing some help to visualize problems in tube-based Hi-Fi design.
Sixty years later, we have better methods and means to design audio, but basic facts, figures and ideas still stand, and the book gives interesting insights and backgrounds how things were done and why we are where we are today.

Part 1: Feedback: Feedback effects, Analysis and design, Response and stability, Distortion, Extending design factors;
Part 2: Design and Testing Techniques: Drivers and inverters, Power supplies, Attenuators, Filters and equalizers, Scope test procedures, Speaker systems, Advanced techniques, High-power amplifiers, Test equipment design, Improving old amplifiers.

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SKU: 72861823376

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Lindap
Pawtucket, US
★★★★★ 4
Good for Teething puppies
Color: Teething Stick
After getting my fingers chewed and bitten by my new foster - 8 week old Yorkie , I was desperate to find good teething toys. Fortunately this one arrived quickly. Turned out to be very good for teething puppies! Charlie loves this cooling stick. Once it’s frozen, the cold really seems to soothe his sore gums. The icy part doesn’t stay frozen for long, but it works so well that I bought a second one to keep ready in the freezer while he’s working on the first. Even after it warmed up, he still enjoyed chewing on the soft stuffed part and the tentacles. The product card says not to use it as a chew toy, so supervision is a must, but it held up just fine so far. Overall, this has been a big help during the teething phase — short-lived when frozen, but very effective while it lasts! And worth every penny to save my fingers from being a chew toy.
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Reviewed in the United States on October 7, 2025
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Amanda Rogers
Cuba, US
★★★★★ 5
From Puppy Teething to Adult Favorite – 7 Years Later
Color: Teething Stick, Color: Teething Stick
This has been one of the best toys I’ve ever bought! My dog has loved the Pupstages Cool Teething Stick since she was a tiny puppy, and now at 7 years old, it’s still one of her absolute favorites. It’s been amazing for soothing teething when she was little, and now she still enjoys chewing on it and carrying it around. It’s held up surprisingly well over the years, especially considering how much use it’s gotten. I also love that you can cool it for extra relief—it really helped during those puppy stages. If you’re looking for a toy that lasts and actually becomes a long-term favorite, this is definitely it. Highly recommend for both puppies and even older dogs who still love a good chew! 🐶
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Reviewed in the United States on May 1, 2026
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Stefne
Pawtucket, US
★★★★★ 5
Great for little dogs that like to chew
Color: Hedgehog
Great for my 10 lb chihuahua that loves to chew! Keeps his teeth clean!
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Reviewed in the United States on June 7, 2026
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pgm
Dallas, US
★★★★★ 5
Cute Fun Puppies Love it Immediately Good Price
Color: Teething Stick
This little top was a huge success for my active Multipoo! She started playing with it immediately. I think it will become her favorite toy! It isn't expensive. It is well made and very cute!
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Reviewed in the United States on June 7, 2026
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Angel Harrison
Draper, US
★★★★★ 4
My puppy loves it
Color: Teething Stick
It's cute and a good size for my chihuahua puppy. It seems to be slightly tearing at the seam in the middle, but hopefully it will hold up.
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Reviewed in the United States on May 16, 2026

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