Voltage multipliers (ART600E)

An important step in power supplies, inverters, very high voltage generators (HVGs), electrifiers and other equipment is the one that rectifies and eventually multiplies the voltage, so that it reaches higher values ​​than those available in the application. To change a voltage, multiplying it by different values, several configurations are very useful. These are the voltage doublers, triplers, quadruplers or multipliers by n, which we will discuss in this article. In my book “Power Sources” the reader will find more about the subject, including practical circuits.

Linear Power Controls (ART599E)

However, in mechatronics and other applications that also involve power control, there are cases in which it is necessary to control the speed of motors or the intensity of the current in a load such as a solenoid or even a lamp. There are two basic technologies for controlling the power applied to a load: linear and PWM. In this article, we will analyze the operating principle of linear power controls. In the article “PWM Controls” on this website, the reader will find explanations about the second control method.

Component tester (Beginners) (ART607E)

A component that is essential for any electronics workbench is the component tester. The tester that we describe can be considered a simplified multimeter and can therefore perform some important measurements if it is previously calibrated, according to the instructions that we will provide.

When an assembly does not work (ART609E)

Tips for Assemblers

Assembling electronic circuits is a very enjoyable activity and brings a lot of satisfaction when everything goes right. However, things do not always go as expected and what should be a satisfaction becomes a nuisance and even a cause of conflict. Electronics has its logic, however, failures of various types can occur in an assembly process and the assembler is not always prepared to diagnose a problem. In this article, we give some “tips” on what to do when a project does not work.

Sleep Inducer vs. Noise Muffler (ART606E)

The circuit shown can be used for two different purposes. To help people relax and thus sleep more easily, and also to muffle noises that prevent a person from sleeping, such as a loud neighbor, construction work, etc. The device is based on the relaxing properties of white noise, which is generated by a simple electronic circuit.

Insect repellent (ART608E)

Certain types of insects that "bite" humans, such as mosquitoes, midges, curassows, or whatever they are known as in various regions of Brazil, cannot tolerate certain continuous sounds of certain frequencies. Based on this fact, we describe a sound emitter that disturbs certain insects and can function as a repellent.