# Hobbyist & DIY Electronic Devices &amp; Circuits

### Electrical and Network Testing and Measurement Tools

Electrical testing and measurement devices can tell you if a circuit or wire is energized as well as tell you how much voltage or current an electrical circuit is carrying. Other types of testing devices can tell you if a network cable is connected properly or if there is continuity in that cable.

### Circuits: Theory and Usage

Learning and mastering electronic concepts may not be a short term process. Rather it involves relentless and comprehensive study of the subject, both theoretically and practically. The articles included here provide a clear picture of the various aspects of working with electronic circuits.

### 25 DIY Hobbyist Electronic Circuits to Build - From Bright Hub Engineering

Are you an electronics novice? Or a hardcore electronic hobbyist who wants to learn how to make useful electronic circuits? Either way, you have reached the right destination! Here we introduce some very cool and interesting electronic hobby circuits that you can build.

### How to Make a Wind Mill Using a Bicycle Dynamo

The proposed mini-electricity generator project is very simple to build and can be used by students as a school project, or just for hobbyists. The set up can be used to charge a battery with electricity produced from wind power.

### How to Build a Bicycle LED Speedometer

You may be a good bicycle rider, but wouldn’t you love to know how fast you really ride? The article presents an easy electronic circuit which can be integrated to your existing bicycle dynamo to get an instant LED illuminated speed indications, the moment you start peddling.

### Construction and Principle of Operation of DC Series Motor

A DC series motor converts electrical energy to mechanical energy. Its principle of operation is based on a simple electromagnetic law that states that when a magnetic field is created around current carrying conductor and interacts with an external field, rotational motion is generated.

### How to Make a Simple IC 555 PWM Circuit

An ideal Pulse Width Modulation circuit using the IC 555 is explained in the article. Here the configuration shows how the above mode of the IC can be used for controlling DC motor speeds; however the design can be actually used for a number of different relevant application purposes.

### How to Make Interesting IC 4060 Circuits

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.

### Construction and Principle of Operation of the Shunt DC Motor

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.

### Understanding IC 4013 Pin-Outs and Specifications - Datasheet and Application Circuits Explained

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.