I Invented a Switch Plug in my school days but venture capitalists were not invented yet.
From Creations
This idea struck me when i used to visit flea markets to collect gramophones and calling bells and some chemistry lab flasks and test-tubes too. Electronics had not come to me yet and not much in the flea market [...]
A typical Mains Powered China Lamp. On power down, LED light turns on for around 1/2 hr. Gets damaged on lightning activity and wide (uS not nS) transients above 300V. Drawing may have error.
From Schoodles
Mains Adapter Converts 230V AC 50 Hz to Rectified DC which replaces a Battery Pack. It was also called Battery Eliminator by older generations as it was used to save Battery Cost in AM Radios.
From Schoodles
The most important product safety aspect is the transformer, may it be well isolated, may it use a split bobbin, [...]
This is a Generic charger that is made by many brands, the circuit is an approximation of all. Some improvements suggested. Some brands in europe and usa also use this circuit. This works well, but may not be in the best interest of battery life. The cost of the charger needs to be low. So [...]
Lots if Light on One Watt, yes this works, but should be built by those experienced in High Voltage usage and Knowledge of insulation techniques.
This has to be encapsulated in a insulated fire retardant plastic enclosure. You can change the values around what is indicated to experiment with types of White LED available.
This project is [...]
Renewable Energy -Solar Electronics
“Wide range of up to date information about alternative energy generation. Our main focus is on wind power and solar power for the home, but you will also find details on topics as varied as electronics and biodiesel recipes.”
My Notes-
Here are very useful ideas on solar energy and frugal lighting techniques. Solar [...]
Increase the Range of Your LED Flashlight
LED flashlights are great technology. You can learn more about LED flashlights on several websites, for example The LED Museum, the Candle Power Forums and FlashlightReviews.com. – Andrew B. Davidson
LED Flashlight Circuits
Make a Joule thief
LED Lantern – Series Connected Voltage Boost
Don’s LED Page – Online reference material.
Brendan Gillatt Builds [...]
Strippenstrolch – Elektronikbasteln
“Strippenstrolch” is thus a pitch name for “electricians”.
“In Germany one finds this designation now and then for an electrician on the work. Particularly in the winter, if it is still dark in the morning, one often sees “Strippenstrolche” with its building lamp on the building site:”
Kilowatt Classroom Electrical Training
The Industrial Electricians Notebook -
Free online electrical books selection that features interesting and timely subjects: electrical theory, electrical reference information, electrical equipment and maintenance data, industrial electronics, and electrical safety regulations. If you like, you can download, print, and assemble your own electrical book.
Electrical Books
Free On-Line Electrical Books
Industrial Electrical Systems
Basic Industrial Electronics
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“After [...]
I had gone to buy some long wires at a electrician shop, when a terminal box had to be tested, he used a continuity tester.
When i used to buy electrical parts in the past, they used a tester box, made of wood. This had a bulb and a tubelight starter and two long wires (230v [...]
the12volt.com – Automobile Electronics – Car Audio
This is an on going project to provide mobile electronics installers and enthusiasts with a free on line resource for technical information as well as tips and tricks of the trade.
Car Diagrams
Ohm’s Law
Computer Christmas – Light Control Hill Robertson’s Computer Christmas! Home of the 320 Circuit Parallel Port Controller Box! This is the place to be if you are looking for information about controlling Christmas light displays with a computer.
Projects -
Christmas Light Control Forum
4-channel SSR to go with the controller
8 Port Parallel Port Controller
A low cost [...]
Schematics of delabs dapj Tech News delabs News