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    22 x Basic Electronics for Beginners

    Browse through a total of 22 basic electronics for beginners. Read some very useful articles with basic theory about resistors, capacitors, diode, transistors and more.

    relays   resistors   soldering   transistors  

    How to: Breadboard If you watch our Youtube channel you probably know that I use a breadboard to test different circuits. I find this method very simple and easy to use when you need to test a project before making the PCB and solder the components. You can watch this short video where I am trying to explain how to use the breadboard, what is...
    Common Types of Relay You can choose from a wide range of relays but do you know what type to use in your project? Well, sometimes is hard to choose, especially if you’re not sure which model you need or how a specific one works. In this article we will learn about different types of relay and what to use in you circuit to get the desired...
    Reed Relay The reed relay consists of a switch with magnetic contacts that move under the influence of an external magnetic or the induced field from its solenoid. They have faster switching speed compared to the electromechanical ones but their switching current and voltage is lower mainly because of its contacts thickness. As you can...
    Double Pole Single Throw DPST Relay The Double Pole Single Throw DPST relay is the equivalent of 2 SPST switches (NO Normally Open and NC Normaly Closed) and can be used to switch 2 different loads. We have 2 scenarios depending on the type of relay without voltage on coil: with a NO the loads will be OFF because the current cannot flow with a NC the loads will...
    Double Pole Double Throw DPDT Relay The DPDT relay (Double Pole Double Throw) is quite interesting and can be used in various scenarious, including for changing the direction of a motor as you can see in the picture below. It has 2 terminals and 4 connectors and you can look at the DPDT relay as the equivalent of 2 Single Pole Double Throw SPDT relays. Change...
    Single Pole Double Throw SPDT Relay The Single Pole Double Throw SPDT relay is quite useful in certain application because of its internal configuration. It has one common terminal and 2 contacts in 2 different configurations: one can be Normally Closed and the other one is opened or it can...
    NC SPST Normally Closed Relay The NC Normally-Closed SPST (Single Polse Single Throw) relay has an initial closed circuit state when no current is applied to its internal coil therefore it connects the power to the load (fan, light bulb, etc). When voltage is applied to the coil of the relay the internal switch goes to the open position and disconnects the...
    NO SPST Normally Open Relay The NO Normally-Open SPST (Single Pole Single Throw) relay has an opened circuit state when no current is applied to its coil so basically it disconnects the power to the load in the inactive state. When current is applied to its coil the generated magnetic field switches the armature and closes the contact so you can say that...
    Single Transistor Amplifier Revisited – Part 4 What happens to voltage gain when a bipolar transistor is operated at low voltages (Vce < 1V). In a previous circuit that operated at a quiescent Vce of 0.75V, voltage gain was demonstrably low. This experiment is an attempt to quantify what actually happens to voltage gain and input resistance in a general purpose transistor...
    Power Resistor Applications There are so many applications for power resistors that they cannot be easily tabulated. Discussed here are a few practical, useful applications that you will find interesting. First an image with some typical tubular power resistors. A few common power resistor applications Resistance heaters Current sensing – shunt...
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