Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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Over temperature alarm circuit using Thermostat
Over temperature alarm circuit using Thermostat
This alarm circuit uses the 67L080 thermostat (TH) and can be assembled easily, due to the small number of components required.
SBS – Silicon Bidirectional Switch
The SBS – Silicon Bidirectional Switch is a symmetrical low power device used on trigger applications. The SBS is more versatile than the SIDAC.
It also has an additional terminal, which allows you to modify its trigger characteristics with small pulses of current.
Air core inductor inductance calculation
There are some occasions when we have an air core inductor, and we don’t know what its value is. There is an easy way to obtain the inductance if you have the external measurements of this component.
Power Transformer usage
The Electric Power Transformer usage. The transformers allow the modification of the voltage and the current values, so they can take the appropriate one to carry and distribute the electric energy.
7-segment Display
What is a 7-segment Display?
The 7-segment display, is a component used to represent numbers in many electronic devices.
Today, it is very common to find LCDs in much electronic equipment, but there are many that still use the 7-segment display for its simplicity.
Darlington transistor
What is a Darlington transistor?
The Darlington transistor is a special type of transistor with a high current gain. It consists of two internally bipolar transistors being connected in cascade
Voltage – Electrical Potential Difference
Potential difference or Voltage is a kind of force that push charges through a conductor. The larger the voltage, the larger the force
What is an Alternating Current?
The difference between an alternating current and a direct current is that a direct current only flows in one direction. Alternating current circulates in one direction, then the opposite direction, and repeats this process continuously.
Light-Emitting diode connected to 120/240 VAC
This circuit shows one or two LEDs directly connected to the outlet (120 VAC or 240 VAC). The reduction of the AC input voltage to one that is suitable to use in a LED diode is achieved using a capacitor and a resistor.
Time Delay circuit using Triac and 555 timer
This Time delay circuit using Triac and 555 Timer is very useful when we want to activate or switch on, appliances or devices that work on alternating current (AC), after a preset time.
Differential Temperature Controller (PCB)
This circuit measures the temperature difference between 2 sensors and activates a relay when they are different. It is also possible to detect a temperature change, even when the two measured temperatures are normally different.
Iron Core Inductor
The iron core inductor has very special magnetic characteristics. What they do is to reinforce the magnetic field. The magnetism of the core material depends on the bias of “the molecular magnetic domains”