Measure Capacitor ESR with an Oscilloscope and Function Generator

Build your own variable 0-60V 0-30A DC Adjustable bench Power Supply

Build A Simple VFD or Variable Frequency Drive!

Inverting Operational Amplifier (1)

The Inverting Operational Amplifier configuration is one of the simplest and most commonly used op-amp topologies

Ferrite toroid calculation:

Precision 1Hz Clock

This precision clock uses just two ICs and one junction field-effect transistor (JFET) in conjunction with a commonly available crystal and a handful of other passive components.

Η «κινησιακή» ηλεκτρεγερτική δύναμη και ο κανόνας ροής

Αν σκεφτείτε πως λειτουργεί ένα τυπικό ηλεκτρικό κύκλωμα που αποτελείται από μια μπαταρία συνδεδεμένη μ’ έναν ηλεκτρικό λαμπτήρα, θα δείτε ότι ανακύπτει ένα ερώτημα: Ξέρουμε ότι στην πράξη σε ένα τέτοιο κύκλωμα το ρεύμα είναι κάθε χρονική στιγμή το ίδιο σε όλα τα σημεία του. Γιατί όμως, άραγε, να συμβαίνει αυτό, τη στιγμή που η μόνη προφανής κινητήρια δύναμη του ρεύματος βρίσκεται μέσα στην μπαταρία;

12V Lamp Flasher Circuit Analysis With LTspice

https://www.youtube.com/watch?v=ERUvBIw6ONI 

SPWM overmodulation (Υπερ-διαμόρφωση SPWM)

Ενα πολύ χρήσιμο (αν και περισσότερο θεωρητικό...) άρθρο, για αυτούς που ασχολούνται με τα Ηλεκτρονικά Ισχύος (Power Electronics).

Αρκετά εξειδικευμένο για κάποιους βέβαια...

EEVblog #279 - How NOT To Blow Up Your Oscilloscope!

Regulated Car Battery Charger Circuit for Garage Mechanics

If you are an automotive technician, vehicle technician, or a motor mechanic, you may find this cheap yet powerful car battery charger circuit extremely handy, as it can be used for charging all types of car and motorcycle battery overnight with minimum effort.

Power Factor Correction | Active Power Factor Correction | PFC Control | Boost PFC

 

Basics of Ferrite Beads: Filters, EMI Suppression, Parasitic oscillation suppression / Tutorial

This video discusses the basics of ferrite beads, and their uses for basic filtering applications.

It discusses and demonstrates how ferrites act as resistors at high frequencies, and how this is used for EMI/RFI Suppression, improved power supply filtering, parasitic oscillation suppression, and others. The affect of the frequency dependent resistive characteristic of the ferrite beads is demonstrated by showing its effect on a swept RF signal, its effect on the rise/fall time of a digital signal, and its effectiveness of eliminating parasitic oscillation.

Make your own Electronic Candle

Electronic or flameless candles are an alternative to traditional wick candles. These are used for home décor and do not carry the risk of fire as these have LEDs that glow instead of an open flame.

Measure Capacitors and Inductors with an Oscilloscope and some basic parts (video)

Introduction to power factor correction (PFC) and control

https://www.youtube.com/watch?v=rIhnBTFe--g

 

Boost Converters and Buck Converters: Power Electronics (video)

https://www.youtube.com/watch?v=vwJYIorz_Aw&fbclid=IwAR3O_wz6w00sD4v-0eP-BHt-Ueqx8XXA0hTeHNFrdsq4U49DF2CqrfsMDMc

Measuring Power Inductors

 

Most LCR meters measure components with a current of just a few milliamps. For capacitors and resistors this is fine, but the inductance (and properties in general) of power inductors vary with the (DC) current level.

Waveform / Function Generator Using Arduino | With Code & Circuit

https://www.youtube.com/watch?v=-o0iHMydte4

How a PFC converter Works with Texas Instruments UCC28180