This article is the second of a series obtained from a free book you can download in this site. The book, Practical Ideas and Information for Makers is a collection of ideas and tricks useful for all maker who works with electronics.
Read more: Useful improvisation and ideas for makers - 2 (ART528E)
This article is part of a free book you can download in this site. The book, Practical Ideas and Information for Makers is a collection of ideas and tricks useful for all maker who works with electronics.
Read more: Useful improvisation and ideas for makers - 1 (ART527E)
SIDACS (Silicon Diodes for Alternating Current) are very versatile components, although still little explored in practical assemblies, as they are relatively new. In this article we focus on an interesting application that is a fence electrifier. As readers will see, thanks to the electrical properties of this component, an electrifier, which is nothing more than a high voltage generator, becomes very simple.
Ultrasounds cannot be heard by humans, but they annoy small rodents and even birds that move away from where they were emitted. By installing an ultrasonic oscillator in a silo, pantry, supply closet or other location that is subject to rodent attack, we can keep them away without the need to use dangerous chemicals or traps.
This circuit can be used in its basic version as a timer for courtesy light in cars or even in the laboratory to determine the time of chemical processes. What this timer does is to keep a lamp on for an adjustable time in a pot between 0 and a few minutes. In the standby condition with the lamp off, the device's consumption is extremely low since it uses CMOS integrated circuit.
This device generates a high voltage from ordinary batteries capable of causing a good shock to anyone who touches its output. If we connect this output to any metal object we want to protect it will be electrified.
This circuit was found in a 1977 Radio Shack documentation. Its purpose is to generate 1 Hz...
When we connect the power supply of the circuit shown in the figure the capacitor is discharged and thus...
We find this circuit in an old American documentation, but it is perfectly current by its...
This circuit is from an American publication of 1978. It can be assembled with modern transistors, since...
The power source shown for powering for small TTL circuits was found on a Radio Electronics...
IGBTs are widely used in frequency inverters, power controllers, switched sources and DC/DC...
This oscillator can run in frequencies up 10 MHz depending on the Power supply voltage. The 1 µF...
This one-digit counter is part f the samples bench of the MultiSIM in one of its versions. The...