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What is the Identity Law in Boolean Algebra? The identity law in mathematics states that special numbers such as: Zero, (0) and One, (1) do not change the value of another number when combined with it using specific mathematical operations. These special "identities" act like neu...
What is a Phototransistor The Phototransistor is another optoelectronic semiconductor device that conducts current when exposed to light. The amount of electric current it passes depends on the intensity of light it receives. Phototransistors are basically a photodiode-amplifier ...
What is Negative Temperature Coefficient Negative Temperature Coefficient, or NTC for short, plays an important role in determining the thermal behaviour of various electrical and electronic components. Such as thermistors, amplifiers and semiconductors. There are multiple types ...
Optoelectronic Devices The Photodiode uses a pn-semiconductor junction to convert surrounding light energy into an electrical signal which can then be processed and used to monitor some physical condition. As such, photodiodes are a fundamental component in the branch of electron...
Using Series Resistors With LEDs A light emitting diode will illuminate once current starts to flow through it so a series LED resistor is required for current limitation. This series resistor creates a voltage divider network with the LED allowing it to operate safely. Nowadays,...
Electrical Nodes, Loops and Branches of a Circuit Nodes, loops and branches are the three fundamental ideas of electric circuits and networks that help us understand how electricity flows around them. Then we need to understand some basic concepts and terminology when solving com...
How Does a CD 4017 Johnson Counter Work The 4017 Johnson Counter is a fast switching 5-stage synchronous decade counter/decoder chip complete with ten fully decoded outputs, (Q0 to Q9). These ten outputs switch sequentially one at a time "HIGH" while all other outputs are "LOW". ...
What is an H-bridge Circuit DC motors are high-powered devices which we can use in many different applications and projects, so it comes as no surprise that special circuitry is required to drive a DC motor. An H-bridge circuit is a simple DC motor driver configuration which allo...
