37MB
Theory and Applications of Electron Tubes
Herbert Reich, 2nd edition 1941, 716 pages, from the Pete Millett's website
One of the best books on vacuum tubes. Very comprehensive, the document’s electronics section is available on Pete Millett’s website. His collection of PDF books is very impressive. The work involved in cutting, scanning books ranging from 500 to 1500 pages must have been enormous. I invite you to explore it. There is a wealth of information on tube amplifiers. Comment from the site:
“If there's one book that will bust my website's bandwidth limits, this may be it. 716 pages of vacuum tube theory, this may be THE best book about vacuum tubes. Detailed, complete with plenty of math and drawings. Covers how tubes work and how to design circuits around them, with chapters on class A/AB1 and AB2/B amplifier design, power supplies, and more! ...”
Herbert Reich, 2nd edition 1941, 716 pages, from the Pete Millett's website
One of the best books on vacuum tubes. Very comprehensive, the document’s electronics section is available on Pete Millett’s website. His collection of PDF books is very impressive. The work involved in cutting, scanning books ranging from 500 to 1500 pages must have been enormous. I invite you to explore it. There is a wealth of information on tube amplifiers. Comment from the site:
“If there's one book that will bust my website's bandwidth limits, this may be it. 716 pages of vacuum tube theory, this may be THE best book about vacuum tubes. Detailed, complete with plenty of math and drawings. Covers how tubes work and how to design circuits around them, with chapters on class A/AB1 and AB2/B amplifier design, power supplies, and more! ...”
25MB
Radiotron Designer's Handbook
Fourth Edition, P. Langford Smith, 1953, 1,498 pages!, from the Pete Millett's website
One of the key references for understanding and using vacuum tube technology. Very comprehensive, the document’s electronics section is available on Pete Millett’s website. His collection of PDF books is very impressive. The work involved in cutting, scanning books ranging from 500 to 1500 pages must have been enormous. I invite you to explore it. There is a wealth of information on tube amplifiers. Comment from the site:
“The later and much more comprehensive version of the RDH3 above, this is probably the best book out there for the casual vacuum tube circuit designer. Coveted by the audio guys, it also has plenty of info on the design of radio receivers. This version is one I have scanned myself, in one file, with added nested PDF bookmarks so it's easy to find things. There are PDF versions already floating around the web... but I never figured out who scanned what, and there are a couple of versions that people are trying to sell, so I've not posted any of them here. ...”
Fourth Edition, P. Langford Smith, 1953, 1,498 pages!, from the Pete Millett's website
One of the key references for understanding and using vacuum tube technology. Very comprehensive, the document’s electronics section is available on Pete Millett’s website. His collection of PDF books is very impressive. The work involved in cutting, scanning books ranging from 500 to 1500 pages must have been enormous. I invite you to explore it. There is a wealth of information on tube amplifiers. Comment from the site:
“The later and much more comprehensive version of the RDH3 above, this is probably the best book out there for the casual vacuum tube circuit designer. Coveted by the audio guys, it also has plenty of info on the design of radio receivers. This version is one I have scanned myself, in one file, with added nested PDF bookmarks so it's easy to find things. There are PDF versions already floating around the web... but I never figured out who scanned what, and there are a couple of versions that people are trying to sell, so I've not posted any of them here. ...”
884Ko
Building a Reception Loop Antenna: An article about constructing a loop antenna.
“The amateur, given the current state of international radiotelephone organization, must be able to cover a wavelength range extending from 11 to 2,000 meters with their receiver. If they absolutely want a loop antenna, they must sacrifice all wavelengths below 200 or 180 meters. That being said, and the « sacrifice » accepted, a loop antenna must be able, like all other oscillating circuits in the setup, to resonate for all waves in the 200-2,000 band (a). Furthermore, due to the ease of tuning,...”
“The amateur, given the current state of international radiotelephone organization, must be able to cover a wavelength range extending from 11 to 2,000 meters with their receiver. If they absolutely want a loop antenna, they must sacrifice all wavelengths below 200 or 180 meters. That being said, and the « sacrifice » accepted, a loop antenna must be able, like all other oscillating circuits in the setup, to resonate for all waves in the 200-2,000 band (a). Furthermore, due to the ease of tuning,...”
325Ko
The Leclanché Battery: by Leclanché himself (source BNF).
“SOME OBSERVATIONS ON THE USE OF ELECTRIC BATTERIES. CONSTANT BATTERY WITH MANGANESE PEROXIDE IN A SINGLE LIQUID ...”
“SOME OBSERVATIONS ON THE USE OF ELECTRIC BATTERIES. CONSTANT BATTERY WITH MANGANESE PEROXIDE IN A SINGLE LIQUID ...”
7.8Mo
Course on Ferrite Coils: Excerpt from a Ferroxcube documentation.
“ Ferrites are dark grey or black ceramic materials. They are very hard, brittle, and chemically inert. Most modern magnetically soft ferrites have a cubic (spinel) structure. The general composition of such ferrites is MeFe2O4 where Me represents one or several of the divalent transition metals such as manganese (Mn), zinc (Zn), nickel (Ni), cobalt (Co), copper (Cu), iron (Fe), or magnesium (Mg). ...”
“ Ferrites are dark grey or black ceramic materials. They are very hard, brittle, and chemically inert. Most modern magnetically soft ferrites have a cubic (spinel) structure. The general composition of such ferrites is MeFe2O4 where Me represents one or several of the divalent transition metals such as manganese (Mn), zinc (Zn), nickel (Ni), cobalt (Co), copper (Cu), iron (Fe), or magnesium (Mg). ...”
1.7MB
Summary on Capacitor Technology: ARRL.
“ Capacitors, their composition, their uses ...”
“ Capacitors, their composition, their uses ...”
350KB
An AWG/mm/inches Conversion Table: A printable version of the gauge converter.
“ There is a conversion tool available on this site, but having a printed version can be useful ...”
“ There is a conversion tool available on this site, but having a printed version can be useful ...”
478KB
A Series of Articles on Radio Coils with Examples: R. Soreau.
“A very clear, practical series ...”
“A very clear, practical series ...”
27MB
Practical Treatise on Industrial Electricity: CADIAT/DUBOST (1889, source BNF).
“ General principles — Units — Measurements — Batteries — Electrical machines — Accumulators — Lighting - Power transmission by electricity — Electroplating — Electrometallurgy ...” Note: 27MB!!
“ General principles — Units — Measurements — Batteries — Electrical machines — Accumulators — Lighting - Power transmission by electricity — Electroplating — Electrometallurgy ...” Note: 27MB!!
