Amplifier.cd – measuring instruments – audio The Content consists of theory, test, analog technique and measuring instruments for amplifiers, electronics and Hifi. A Tutorial describes fundamental ideas of electro-technology and the general amplifier and audio technology. The test equipment gallery shows measuring instruments – older, historical and partly new. Obsolete Test Equipment Gallery The 7A42 [...]
Archive of posts filed under the History Vintage category.
School Bus Conversion to Steampunk
He has many achivements to his credit; From converting a Thomas Saf-T-Liner, a flat-nosed diesel school bus into a family camper To a DIY Op-Amp Hot Tub Temperature Controller. Look at Mr. Jake von Slatt, How he done things. This is what we learn from him … Jake’s School Bus Conversion and Other Projects Jump [...]
Vacuum Tube-G Pages from Peter
Some Audio and other Articles/Projects on Vacuum Tubes or Valves. Also he has made Online Calculators .. Bias Tool, Gain Tool and Low crossover cap. Vacuum Tube-G Pages from Peter Some articles written by Alan Kimmel, as it did in the years 1993 to 2004 on the original Tube Labs. The Choke Assisted Mu Stage [...]
All Electronics – Pre-owned or New Parts and Equipment
This is a easy to use Electronics Component eStore. And so well sorted and Boxed. They also buy unused Inventory or surplus from You. They specialize in electronic and electro-mechanical parts and assemblies. All Electronics – Pre-owned or New Parts and Equipment From robotics, electric trains, surveillance, remote control models, antique radio restoration to Used [...]
Electronic Surplus – Obsolete Rare Components
They are Experts with hard to find electronic parts from audio ICs and devices, to transformers and relays. An inventory that is made up of obsolete and active items. Electronic Surplus – Obsolete Rare Components Surplus Electronics: Switches, Capacitors, Transformers, Connectors, Motors, Meters & Analog Indicators, Semiconductors and More. Sell or Dispose your stagnant inventories [...]
Museum Of Electricity – Charles Brush
Yes, there were electric lights powered by central stations before Edison’s! Carbon arc lamps saw extensive use throughout the USA and the world from the late 1870s on. – Charles Brush Museum Of Electricity – Charles Brush The General Electric Company was formed in 1892. It was the result of a meger between the Edison [...]
RCA – Radio Corporation of America – History
The Professor, Talking Machine, Wireless Becomes Radio, Color Television, Nipper and Chipper and More. e RCA History at RCA – Radio Corporation of America – History Guglielmo Marconi, an Italian electrical engineer, transmitted the first wireless signal in 1895. By the turn of the century he had formed telegraph companies in England and opened the [...]
The Philbrick Archive and Operational Amplifier
This site is a free non-profit repository of materials from GAP/R George A Philbrick Researches, the company that launched the commercial use of the Operational Amplifier in 1952. The Philbrick Archive and Operational Amplifier The first commercial Operational amplifier was the K2-W op-amp. It was based on the amplifier used in the Philbrick modular Analog-Computor [...]
Muntzing a Circuit Design
A History of TV is not Complete till you Learn about the Adventures of Earl Muntz. How he cut cost to Promote his TV Sets by Incremental Pruning of Parts from a Working unit. What is important to learn from it though, is that we should not overdesign or underdesign. We need to design a [...]
Recording Technology History
Recording Technology History 1877 – Edison made the first recording of a human voice (“Mary had a little lamb”) on the first tinfoil cylinder phonograph Dec. 6 (the word “Halloo” may have been recorded in July on an early paper model derived from his 1876 telegraph repeater) and filed for an American patent Dec. 24. [...]
Hysteresis – Charles Proteus Steinmetz
Hysteresis – Charles Proteus Steinmetz Charles Proteus Steinmetz (April 9, 1865 – October 26, 1923) was an American Mathematician and Electrical Engineer. He fostered the development of alternating current that made possible the expansion of the electric power industry in the United States, formulating mathematical theories for engineers. He made ground-breaking discoveries in the understanding [...]
Online Museum of Hewlett-Packard – Ken
Online Museum of Hewlett-Packard – Ken “This web site is devoted to the history of test equipment produced by the Hewlett-Packard Company which is now known as Agilent Technologies.” Tour of Ken’s HP Shop kennethkuhn.com Home Tour of HP Garage Agilent History Page HP History Page
