History Vintage (Page 2)

Tech History and Antique Equipment

Amplifier.cd – measuring instruments – audio

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.

7A42 is 4 channel Plug-in amplifier

Obsolete Test Equipment Gallery

The 7A42 is 4 channel Plug-in amplifier up to 350 MHz. Conceived for the measurement of logic signals and offers the possibility for triggering the inputs logical AND/OR. So 4 data lines can be observed at the same time on the oscilloscope.

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.

 DIY Op-Amp Hot Tub Temperature Controller

Look at Mr. Jake von Slatt, How he done things. This is what we learn from him …SteamPunk Workshop Guitar Amp

Jake’s School Bus Conversion and Other Projects

Jump into the problem and solve it, See the way a Creative DIY Enthusiast solves an automation problem at home. The Job gets done this way, such seasoned people are rare. Now the idea is …

Think – Deliberate – Draw – Build – Test – Install

We all get stuck at the ‘Deliberate’ step, If its team work, a few should leave the desk and the conference rooms and start Prototyping and Simulating. This helps understanding a tough problem. Better still find a fast and simple solution.

Then there is that Sensational Site That Jake Built – The Steampunk Workshop. This is where it all Happens.

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.
Tube-G Pages from Peter
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
  • Why use the Kimmel mu stage
  • 7 A few variations of the mu-stage

Related –
Welborne Labs – Wide assortment of DIY components, kits and factory assembled hi-fi gear.
TubeLab – Dedicated to advancing the state of the art in affordable high end audio.

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

All Electronics – Pre-owned or New Parts and Equipment

From robotics, electric trains, surveillance, remote control models, antique radio restoration to Used Parts and Assembly; They have it all for the student, hobbyist or even that rare Inventor. Since 1967 they have this service, nearly a year after i was born. They are as old as Me.

All Electronics Corporation
14928 Oxnard Street, CA 91411-2611, USA

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 or unused items to Electronic Surplus. This is a Green Solution, Recycle, it also helps small entrepreneurs do something new. Remember old parts may corrode and get infested if idle for long. Electrolytics and Batteries do not have a good shelf life.

Electronic Surplus - Obsolete Rare Components

“E.S.I. was started by Clyde Daniels back before 1930 when he was selling all types of material he then progressed to Military surplus after World War 2 when his son Dick joined him after serving on PT boats in the Navy and Dick mother Ida Maye completed the family operation.”

Electronic Surplus Inc
8755 Munson Road #6, MENTOR, OH 44060

The Professor, Talking Machine, Wireless Becomes Radio, Color Television, Nipper and Chipper and More RCA History at….

RCA – Radio Corporation of America – Wayback Machine snapshot of RCA 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 first wireless office in New York City. In 1901, Marconi telegraphed the letter “S” across the Atlantic Ocean. The U.S. Navy was so impressed that it replaced a flock of carrier pigeons with the “wireless” for ship-to-shore communications.

Two years after inventing the phonograph, Edison brought the world the incandescent light bulb. Thirteen years later, his start-up electric company would merge with the Thomson-Houston Electric Company and be renamed General Electric.

RCA - Radio Corporation of America

In 1929, RCA purchased the Victor Talking Machine Company, then the world’s largest manufacturer of phonographs (including the famous “Victrola”) and phonograph records. This included a majority ownership of the Victor Company of Japan, or JVC. The new subsidiary then became RCA-Victor. With Victor, RCA acquired New World rights to the Nipper trademark. This Trademark is also the trademark for the British music & entertainment company HMV who now display nipper in silhouette.

In the early 1920s, David Sarnoff publicly speculated on the possibility of “every farmhouse equipped not only with a sound-receiving device but with a screen that would mirror the sights of life.” The idea of television was not new, and mechanical systems had demonstrated crude pictures. But it was Sarnoff’s historic meeting with engineer Vladimir Zworykin that set the stage for RCA’s success at electronic television transmission and reception.

Wikipedia – RCA – Radio Corporation of America

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 “black boxes “. That amplifier’s basic circuit architecture, in turn, was probably inspired by an earlier amplifier designed by Loebe Julie (Dan Sheingold and Bob Pease, thanks for helping me with this information). The K2-W Operational Amplifier entered the commercial market in 1952.

Bob Pease’s desk circa 1970 at Teledyne-Philbrick, as photographed by student intern Stu Brennan.

From EE Tech Metrics – dapj