When someone rings your doorbell would not be good to know about it when you're not home? Well this project will do just that, to touch the bell you receive an SMS. Pressing the buzzer will send a message to your cell phone and send you a picture of who is there. You often hear that thieves often ...Continue reading..
You probably know that the integrated circuit is used as an LM317 adjustable voltage regulator, but by a miracle of electronics it can also be used as an audio amplifier with a maximum power of audio 1 Watt. There is actually more mysteries in electronics that between heaven and earth.(their) But this can also turn LM317 ...Continue reading..
Stumbled upon a collection of fact sheets of some of the most popular Electronic Valves. Most datasheets are in PDF format and some are links to other pages, course are in English. Below the table of Dr. Tubes Triodos pêntodo tetrodos, Rectifier and Nuvistors ECC81 / 12AT7 ALTA Mu Triode ECC81 Gêmea 9a 96kb – RFT 1956 (German) ...Continue reading..
A cell or battery is a device that converts chemical energy into electrical energy. The stack has three parts: the electrodes, the electrolyte and container, but constitute a single unit, the battery is formed by a set of series-connected batteries are rechargeable and usually.Continue reading..
In big cities, or even inside our homes, we are all subject to an invisible pollution, that does not smell and we can say that is imperceptible, but can be fatal if the person is exposed for long periods. One is the electro smog, which is the part of the electricity that was generated, but lost upon passing over ...Continue reading..
What do you think of using a direct output led in its variable source, regardless of the output voltage? It is very difficult to find a simple solution to this problem. Maybe a zener solve, or a way to regulate the voltage and current without many components not endear, as to light a single LED should not have much effort. How to connect a ...Continue reading..
Phantom load is a dummy load , a device that is used to simulate an electrical load , usually for testing purposes. There are basically two types of phantom loads, a de RF, the Power and Audio, in this article we show a load circuit for audio. When you want to test an amplifier, can sometimes be ...Continue reading..
A Lampada LED, abbreviation LED, developed at the Massachusetts Institute of Technology operates 230 percent efficiency. That is not a typo it has an efficiency of 230% and will provide 70% Lighting the world 2020.Continue reading..
This is another simple design that leverages an additional feature of a component. In case the sensor used is a 1N4148 diode Transistor BC547B or with the base and collector shorted. Have you ever seen right here on the blog a Circuit Temperature Sensor using 1N4148 diode, and also the temperature sensor LM35, but this is different because of its simplicity. Circuits ...Continue reading..
For those who ride or develops electronic circuits the need for a source of protection system is paramount. In both blow fuses confess that I ended up having to recycle a blown fuse, abomination. But there is a practical and efficient output that is the construction of an electronic fuse. The electronic fuse is a device that plays the fuse ...Continue reading..