delabs Circuits

Showing posts with label History-2. Show all posts
Showing posts with label History-2. Show all posts

Sunday, January 01, 2017

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 General electric Company and the Thomson-Houston Company, which themselves incorporated several other companies.

Museum Of Electricity - Charles Brush

Electricity, technology, and lots of arcs and sparks!

Museum Of Electricity contains Vintage Electrical and Historical images and description. They include the Edison Lamp, Tesla Coils, Lightning and Atmospheric Electricity and the .....

Amazing Jacob's Ladder

So how do they work?  First two conductive metal rods are positioned in a rough “V” shape with a slight space between them at the base.  A sufficient voltage differential is provided from a high voltage transformer to breakdown the air in the gap between the rods.

Tuesday, August 18, 2015

RCA - Radio Corporation of America - History

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

Monday, February 09, 2015

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.

Adventures of Earl Muntz and his TV

What is important to learn from it though, is that we should not overdesign or underdesign. We need to design a cost effective product within customer budget. More Bells and Whistles in yet another Model. A Model to cater to every Purse. And a BareBones model for those who just can barely afford it.

History of Muntzing

Muntz Story

"He took a trip to New York City, checked into the Warwick Hotel and ordered three television sets delivered to his room: an RCA, a Philco and a Dumont. He turned all three televisions to the same channel and began pulling tubes from each one by one. When he pulled one tube too many from a set and the picture went black, he would make a note. Then, he put all the tubes back, changed the channel to another of the four television stations operating in New York City and repeated the test."

Friday, August 14, 2009

Hans Christian Ørsted - Electromagnetism

Hans Christian Ørsted - Electromagnetism

"He found that the magnetized needle of a compass was deflected whenever the electric current through a voltaic pile "

Google the pages of Hans Christian Ørsted

Hans Christian Ørsted - Electromagnetism

Image from Hans Christian Ørsted - Billedgalleri

Friday, May 23, 2008

Teralab Electronics projects - Robert Hunt

This site is an attempt to document some of the physics experiments and science projects which I have conducted in my laboratory at home. These experiments include high vacuum, electron optics and electrostatics. There is also a virtual museum of scientific instruments, antique lamps and antique valves. See Tera-fying Experiments, Virtual Museum and X-Ray Gallery.

Teralab Electronics projects

"My father was interested in T.E.Lawrence and used to visit Pat and Joyce Knowles who looked after Lawrence's cottage. Because they lived way out in the country side, they were not connected to the electricity supply. Pat generated electricity to charge a small room full of accumulators using solar panels and windmills. Pat encouraged my scientific interest by giving me old electronic equipment to play with." - Robert Hunt

Teralab Electronics projects - Tesla Coil

Electronics projects - Video Monitor, Geiger Counter, Relay and DAC Controller, A small Tesla Coil.

Wednesday, April 30, 2008

Historical Electricity Teaching Instruments

In February 1975, Deborah Jean Warner, a Curator of Physical Science at the National Museum of American History, called me to ask if Kenyon had any historical physics teaching apparatus. I looked around my office.......

Thomas B. Greenslade, Jr. - Professor Emeritus of Physics - Kenyon College, Gambier, Ohio

Historical Electricity Teaching Instruments

Electrical Measurements, Electric Motors, Electricity, Static Electricity.

Historical Electricity Teaching Instruments

Physics apparatus often goes by various names. The interrupter, the electrotome and the repeater are all the same instrument. Some apparatus has a person's name attached to it: Matteucci's apparatus or Wheatstone's bridge. Other apparatus isn't used any more: Packard's apparatus or the piezeometer.

Contents

Basic Electronics
Basics of Electronics
Product Production
Work Discipline
Testing Points
Learning Electronics
Electronics Theory

Production Notes
Prototype Fabrication
Electrical Circuits
Electromechanical


Library
Scots Guide Electronics
Engineering - Wikibooks
Design Lab - Jim Svoboda
DC Circuits UOG
Socratic Electronics
Blobz Guide Electric Circuits


Product Design
Product Development
Constant Current Source
Good Voltage Regulators
Insulation Resistance
Digital Insulation Tester
DN Schematic PCB 04
DN Product Design 07


Hobby Circuits
VU Meter Circuits
LED brightness control
555 Incredible Chip
Process Control
liquid level measurement
Thermocouples and RTD
Design ADC Interface uC
Thermocouple Amplifier
IA Instrumentation 02
Temperature on DMM
Optical Proximity Switch
Analog Mux - Data Acquisition


Test Measurement
Instrumentation Automation
NI Test and Measurement
DMM Digital Multi Meter
Oscilloscope in T&M
IA Automation 01
Build Instruments
Tektronix T&M Equipment
Educators Corner – Agilent


Power Electronics
UPS Background
Transformer Connections
DN Power Electronics 03
DN Power Electronics 02
Half Bridge Convertor SG3525


Embedded
Interfacing Microcontrollers
Embedded Process Control
80C31 8052 Microcontroller
Microprocessors and uC
Embedded Systems Design

Components
Good Voltage Regulators
Relays and Contactors
Potentiometers Trimpots
Prototype Boards Types
Types of Capacitors
Types of Switches
Resistors How they Work
Coils Transformers SMPS
Mains Transformers Types
DN Components Selection 05

Tutor Gadgets
Count-Up Timer
Digital Logic Gates
Electronics Tutors

History
Teaching Instruments
Charles Proteus Steinmetz
Muntzing a Circuit Design
Teralab Electronics projects
Historical Instruments


Tables, Charts, Videos
Binary and Hex
Resistor Color Code
Ohms Law
Giga, Tera, Pico, Nano
High Resistance Materials

Analog
School - Analog Design
DN Analog Basics 06
DN Op-Amps 01
TI Semiconductors