Electronics Area – Electrical and Electronics Tutorials and Circuits
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Electrical and Electronics Tutorials and Circuits
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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.
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)
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 1 Input – 4 Outputs Stereo Audio Splitter has a single input and 4 independent outputs, each amplified with an operational amplifier configured as a voltage follower.
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.
Variable Dummy Load for Power Supply Testing
Variable Dummy Load for Power Supply Testing. How to test a voltage source to know if it is good or not?. What is the percentage regulation?.
Transformer cores are laminated. Why?
Transformer cores are laminated. Why is it not possible to use a solid iron core instead of a core-laminated one? What are Eddy’s or Foucault’s currents?
High current pulse generator
High current pulse generator using a 555 timer and a voltage regulator. This circuit can be useful for DC Motor control. Light control, etc.
Diode Tester Circuit using 741
This diode tester circuit checks, if the diode is in good condition and also determines its polarity. To accomplish our goal, we use an 741 operational amplifier (IC1) configured as an oscillator.