Electronics Area – Electrical and Electronics Tutorials and Circuits


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Electrical and Electronics Tutorials and Circuits

Digital Electronics


Operational Amplifiers

Circuit diagrams & Projects





Electronic Filters

Power Supplies

Electricity and Magnetism Basics

Instruments & Measurements

Recent posts

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.

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.

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.