Dark-Activated Fluorescent Lamp Flasher (ART061E)

This circuit turns on automatically at dusk and off again at dawn. It can be used in visual alarms and “attention getters” in commercial advertising.

How to build a workbench (ART593E)

Note: This article is part of our book Build a Electronics Workbench

After considerations about everyone's work with electronics, the choice of location and other important factors that will determine how you should choose your bench, we finally arrived at it.

Welding, welder and welding accessories (ART594E)

We could include the welder in the category of tools, but its importance is such that we prefer to talk about it separately. We will not go into detail about welding techniques or how a welder works, as they are not part of our objectives with this book

Testing and discovering relay characteristics (ART597E)

Relays are used in a large number of mechatronic projects. However, the relays we intend to use in a project, which can be used from our scrap, do not always have their characteristics specified. How to test relays and how to discover their characteristics using the multimeter is the subject of this article. If the reader wishes to know more about the use of the multimeter in other tests, we recommend the books “Instrumentation – Multimeter” – Volumes 1 and 2. (see National Books)

Wireless Guitar (ART603E)

We describe the assembly of a small transmitter that is connected to an acoustic guitar or bass guitar, sending signals to a stereo at a distance of up to 20 m. This stereo can then be used as a wireless amplified speaker. The circuit works with common batteries and is simple to assemble.

The Workbench instruments – The multimeter (ART595E)

When working with electronics, many types of measurements must be carried out, and at the same time, you must have some special equipment. Therefore, when thinking about a bench, we must think about a special category of resources that is given by instruments.