Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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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.
Off-Delay Timer Circuit using 555 IC
This off-delay timer is ideal when we want to schedule the automatic shutdown of a device after a predetermined time, using the well known 555 IC
Metronome circuit with adjustable BPM
This metronome circuit with adjustable BPM, allows those persons who study or are music fans, to keep the timing, quite accurately for a long period of time.