Hobbyist & DIY Electronic Devices & Circuits

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  • Making Flasher, Timer, Oscillator Circuits Using a Single Chip
    A built-in oscillator stage in the IC 4060 chip makes it truly versatile and applicable for numerous different applications. It can be easily configured as an accurate timer, oscillator, flasher, clock generator, or sequential timer, and that's just the beginning of its usefulness.
  • Understanding Shunt-Wound DC Motors
    Shunt DC Motors operate on direct current. As such, the field windings and armature are connected in a parallel combination, and in electrical terminology a parallel combination is known as a shunt. This type of motor is a "shunt-wound" DC Motor and the type of winding is called a shunt winding.
  • IC 4013 Pin-Outs and Datasheet Explored
    This IC is basically made up of two D-type flip flop modules and set/reset asynchronous toggle inputs. As the name suggests, the IC is primarily used as a bistable for toggling the output stage of a particular circuit, and it is fundamentally incorporated in most electronic circuits.
  • Understanding Small Signal NPN and PNP Transistors
    Building virtually any electronic circuit from these small signal transistors and their complementary pairs may be feasible. This goes to show just how versatile and important these devices can be.
  • Build Yourself a Simple Continuity Tester
    If you don’t want to use the cumbersome multimeters for tracing out simple faults like short circuits, continuity or resistance inside PCB assemblies and wirings, then perhaps the circuits described in this article are exactly what you need. Find out how to make a continuity tester.
  • How to Make your Landline Telephone Ring Louder
    Do you miss calls due to a quiet ring on your landline telephone? This can be a real problem in houses having multiple rooms. A simple circuit idea of a telephone ring amplifier produced here will make the volume of your telephone audible from anywhere in the house
  • Homemade Variac Circuit Explained
    A commercial variable voltage autotransformer is a costly device to procure. However through some simple interlinking of a couple of ordinary transformers, different levels of mains voltages quite comparable to the above may be obtained. The complete procedure is explained herein.
  • Easy, Melodious Door Chime Circuit Explained
    Although a bit elaborate, the proposed design of a musical doorbell circuit provides some useful features like a built-in timer and a pleasing, replaceable audible note. Moreover, unlike conventional units, the present design is highly reliable and permanent in its operation.
  • How to Make Electronic Circuits without Soldering
    For a newbie building electronic circuits over breadboard is probably always a better option, simply because the device facilitates easy interlinking of the various electronic parts into circuits using ordinary jumper wires. A complete initial breadboarding tutorial is covered here.
  • Make Your Greeting Card Sing
    Want to surprise your dear one by sending a self made musical greeting card? A little knowledge of electronics and the simple instructions provided here is all that you need to make a greeting card “sing” every time it’s opened.
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