Electronics Area – Electrical and Electronics Tutorials and Circuits

Welcome to Electronics Area

Electrical and Electronics Tutorials and Circuits

Digital Electronics	Semiconductors
Operational Amplifiers	Circuit diagrams & Projects
Transformers	Resistors
Capacitors	Inductors
Electronic Filters	Power Supplies
Electricity and Magnetism Basics	Instruments & Measurements

Voltage Divider – Voltage Division – Series Resistors

The voltage divider is a circuit that allows us to obtain an output voltage less than the input voltage. The output voltage is normally obtained across ground and the resistor connected to it, but it could be across any of the other resistors.

Maximum Power Transfer Theorem Explanation

What does the Maximum Power Transfer Theorem say? “The maximum power transfer to the load is obtained when the load resistance RL is equal to the internal resistance of the…

Karnaugh Map (K-map) – How to simplify Boolean functions

The Karnaugh map (K-map) is a widely used tool for simplifying logic circuits. When you have a logical function with its truth table, and you want to implement this function in the simplest and most economical way, this method is used.

Energy-saving Flashing Pilot Light

This Energy-saving Flashing Pilot Light Circuit is intended to give us a visual warning that we have electronic equipment turned on. This is especially important on equipment that uses batteries.

Voltage Drop Alarm Circuit – Useful for PS Testing

This voltage drop alarm is very useful for power supply monitoring or testing. It activates a buzzer when the test voltage drops below a reference voltage.

How to add a tweeter to a baffle or speaker

How to add a tweeter to a baffle or speaker. Very simple circuit, using only one potentiometer and two capacitors, very easy to install.

Electronic Filters – Low-Pass, High Pass, Band Pass

Electronic Filters – Filters are networks that allow or block the passage of a specific group of frequencies (frequency band)

Scientific Notation – Engineering Notation

Scientific notation and engineering notation allow the representation of very large or very small quantities, very common in engineering and technical fields

Perfect Square Wave with 555 – Formula – Examples

Perfect Square Wave with 555 – A simple circuit that uses the 555 timer to produce a stable perfect square wave. Formula, examples.

Audio Splitter Circuit Diagram – 1 Input – 4 Outputs

This circuit has a single input and 4 independent outputs, each amplified with an operational amplifier.

Light sensitive alarm using LDR

This alarm activates when the illumination level changes from almost total darkness to a moderately high illumination level. When this happens the alarm is locked and the alarm signal, be it a light or a sound, remains active.