Nos receptores de rádio, antes do advento dos sintonizadores digitais, eram utilizados capacitores variáveis para sintonizar mecanicamente as emissoras (figura 1). Ainda hoje, muitos rádios o fazem desta forma. Dependendo da qualidade do capacitor variável e da forma e intensidade de uso do aparelho, este componente costuma apresentar defeitos bem específicos. Apresento aqui algumas técnicas…
Nuts & Volts Magazine is written for the hands-on electronics hobbyist, design engineer, technician, and experimenter.
________________________________________________________ Struttura del cavo coassiale La struttura di un cavo coassiale è costituita da alcuni elementi principali: il conduttore centrale, il dielettrico che avvolge il conduttore centrale e che ha la funzione di isolante, la schermatura e la guaina esterna del cavo.
In this tutorial I will describe how to drive a 7 segment module using a 4511 – BCD to 7 Segment Latch/Decoder/Driver. First we need to familiarize ourselves with the 7 segment module. These modules are made up of 8 LEDs, 7 of which make an “8” pattern and 1 for the decimal point. Using the 7 segments, you can...
O Site do Hardware Livre - OSHW - Ensinando eletrônica, automação e mecatrônica de forma fácil e descomplicada
If you want control the DVD or TV/AV system that located in your living room via the remote control when you sleeping in your Bedroom. this IR extender will achieve this for you. Basically, it works as a repeater that moves the IR signal to a different location. This is an improved IR remote control extender circuit. It has high noise immunity, is resistant to ambient and reflected light and has an increased range from remote control to the extender circuit of about 7 meters. It should work with any domestic apparatus that use 36-38kHz for the IR carrier frequency.
it is the well-regulated power supply. We use it as the simple step down 12v to 9v converter circuit. It can give the output current up to 4A.
From private browsing to password managers, mobile security couldn't get any simpler.
Simple Metal Detector: The other day when I was searching instructables I come across on interesting and simple circuit for metal detector. It is build with 555, coil and few other components. Instructable that inspire me to do this project was this one. Main debate was: …
Доброго времени суток! В этом обзоре речь пойдет о зарядке для автомобильных АКБ. Если кому интересно, то милости прошу под кат… ТЕХНИЧЕСКИЕ ХАРАКТЕРИСТИКИ (Google Переводчик) Зарядное устройство было упакована вот ...
Accessible at https://nandustips.blogspot.com/2014/08/crystal-radio-through-speaker.html Regards, Nandu.
Nuts & Volts Magazine is written for the hands-on electronics hobbyist, design engineer, technician, and experimenter.
In search of the best walkie talkie apps? Here are some great two-way radio apps for iPhone and Android.
Blocking ads and pop-ups on all of your devices can sometimes take a lot of time and effort. Today, I'll show you how to install an ad blocker for your entire network in 15 minutes.
Update V2 2018/11/10CoverD and coverC changed , rounded curves, pi mounts removed (for easier installation), added a 8mm switch port, no usb hub, more
In this post, we will see FM Transmitter Circuit Diagram. FM transmitter broadcasts the signal from any audio device to a standard FM radio. This
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Como hacer un cautin casero super potente! Genial Invento!https://youtu.be/t0m3cVHn1YwComo hacer una mini aspiradora super potente!https://youtu.be/HdXVuncV6...
Washer Dryer Laundry Alarm Using Arudino & SMS Text Messaging Alerts: Have you ever wished there was a better way to be notified when your laundry was done? Have you ever forgotten a load in the washer because you couldn't hear the buzzer and your clothes became smelly and moldy from sitting there for too long? Well…
