delabs Circuits

Showing posts with label History-1. Show all posts
Showing posts with label History-1. Show all posts

Tuesday, January 03, 2017

Smithsonian - The Chip Collection

The National Museum of American History's Chip Collection consists of individual donations of objects, images and documenation that traces the history of integrated circuits.

Smithsonian - The Chip Collection

The Chip Collection is a continuing work-in-progress concerning a small part of the permanent collection of the Division of Information Technology & Society's Electricity Collections.

ICE, originally located in Phoenix & Scottsdale, Arizona, was purchased after ICE's 30-year collection had been donated & accessioned by the National Museum of American History at the Smithsonian Institution.

Smithsonian - The Chip Collection

Pictures
This site's refrence pictures, diagrams, x-rays, thumbnail selections, and in some cases actual logbook pages in a single category to make your research faster.

Chip Fun
An important though unusual aspect of the history of integrated circuit technology is buried deep inside many chips, we call this chip art.

Thursday, March 12, 2015

Charles Proteus Steinmetz

He 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.

Charles Proteus Steinmetz
 (April 9, 1865 - October 26, 1923)

Charles Proteus Steinmetz

He made ground-breaking discoveries in the understanding of hysteresis that enabled engineers to better design electric motors for use in industry.

Charles Proteus Steinmetz electrical engineer

Hysteresis - Charles Proteus Steinmetz

"Eickemeyer wanted to expand into electrical motors and generators, a brand new field in 1889."

AC hysteresis theory

Shortly after arriving in the U.S., Steinmetz went to work for Rudolf Eickemeyer in Yonkers, New York, and published in the field of magnetic hysteresis, which gave him world-wide professional recognition.

Eickemeyer's firm developed transformers for use in the transmission of electrical power among many other mechanical and electrical devices. In 1893 Eickemeyer's company, along with all of its patents and designs, was bought by the newly formed General Electric Company, where he quickly became known as the engineering wizard in GE's engineering community.

My Notes-

I read about  Steinmetz long ago in a Reader Digest that belonged to my grandfather. It was dated like 1950-60. These issues have become brown and have  been ruled by silverfishes.

I cannot find that article but i remember it roughly ......

People from/related to GE had problems with thier electrical equipment heating up a lot. Then they heard of this person of Germany who had mentioned about some remedy to such issues.

They visited him in his loft or some upstairs room where the solution to this problem was discussed and the rest is remarkable history for Electrical Engineering. 

The part of the story i remember most was that in one of his wardrobe drawers, a Mama Mouse had made it her home and was also having her kids here. Not only did the compassionate Steinmetz allowed it to keep her quarters, he even attended to the new family with some food and necessities.

Heard of very few angels like this.

delabs Technologies
2013 Updated

Thursday, April 17, 2014

Genrad - General Radio - Instrumentation

History and accomplishments of the General Radio Company, one of America’s first equipment manufacturers for the radio and electronics industry.

General Radio Historical Society

Founded in Cambridge, Massachusetts in 1915, GR provided the tools and instruments that allowed the electronics industry to burgeon into today’s giant that fills our lives with radio, TV, computers, cell phones, DVDs and all the other electronic products in our homes, businesses and automobiles.

Type 608 Oscillator

Type 608 Oscillator - Genrad

The GR 608 was the world’s first R-C oscillator, announced in April of 1939. It was designed by H. H. Scott who worked for GR at that time. It used a separate twin-tee R-C network for each frequency which was selected by a push button.

General Radio Experimenter

This pioneer publication first appeared in June 1926 and became the model for many others to follow (most notably the HP Journal). It began with engineers talking to radio amateur customers and gradually changed to engineers talking to other engineers, who might also be customers.

GenRad 1863 Megohmmeter

GenRad 1863 Megohmmeter

The GenRad 1863 Megohmmeter is the choice for production and inspection tests on devices with resistances up to 20 Tohms. The GenRad 1863 will measure resistance at any of five test voltages of: 50V, 100V, 200V, 250V, and 500 VDC. Compared to the GenRad 1864, which has adjustable test voltages from 10V to 1090V, this unit has fewer controls, and is the more economical of the two models.

General Radio - GR

GR had an interesting philosophy of making instruments that were more modular than HP offerings. On the left is the popular HP 608 signal generator, which covered from 10 to 480 MHz in one unit. It had a zillion tubes, weighed a ton, and cost thousands.

Monday, April 07, 2008

Edison and his Inventions

Thomas Alva Edison also known as "The Wizard of Menlo Park" was an American inventor and businessman, He is known for inventions like phonograph or gramophone, the motion picture camera and the electric light bulb.

Thomas Alva Edison

Edison and his Inventions - Inventing Entertainment: The Early Motion Pictures and Sound Recordings of the Edison Companies

The Thomas A. Edison Papers - The Thomas A. Edison Papers Project, a research center at Rutgers School of Arts and Sciences, is one of the most ambitious editing projects ever undertaken by an American university.

Edison - By the time he died in 1931, Thomas Edison was one of the most famous men in the world. The holder of more patents than any other inventor in history,

The Phonograph - On December 7, 1877 Thomas Edison demonstrated his phonograph at the New York City offices of the nation's leading technical weekly publication, Scientific American. The following report set off a stampede of reporters to Edison's laboratory to hear the amazing device.



Edison National Historic Site - Where Modern America Was Invented - Thomas Edison’s home and laboratory are a step back in time, when machines were run by belts and pulleys and music was played on phonographs.  Where to the passerby, the buildings betray little evidence of the industries they once started.  Discover where America’s greatest inventor changed our world forever.

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