Electrolytic capacitors are common, but knowledge of their limitations is uncommon. A demonstration is shown highlighting the difference in performance between electrolytic and ceramic capacitors in power supplies. Other topics discussed in the video: Electrolytic capacitor construction, ceramic capacitors, ESR, ESL, impedance curves, why “0.1uF”, and more.
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A tutorial on what servos are, how they work, and how to use them. Then I build a laser turret using a pan-tilt servo kit and an Arduino Uno. The Arduino is programmed with XOD, a free visual programming language. Download XOD Another XOD tutorial Hitec HS-311 servo Sub-micro servo pack Laser diodes Pan-tilt servo […]
Read MoreAfroman reviews Siglent’s SSA3000X series spectrum analyzer and all the options. There is some info about RF measurements for beginners and some usage experiments are also performed. Firmware version 1.2.8.2. ==========TABLE OF CONTENTS======== 0:00 Intro 0:33 Unboxing and discussion of inputs 1:24 Screen 1:59 Build quality, fan noise, user interface 5:35 AM and FM demodulation […]
Read MoreThe ultimate Arduino microcontroller tutorial for beginners. Learn what Arduino is, how to choose an Arduino, then build a simple data logger, LED dimmer and motor speed controller. Sponsored by Audible – Get a free 30 day trial & download one free title Example UNO kit Example UNO robot kit
Read MoreA tutorial on how to use the popular LM386 class AB audio amplifier IC to build a simple mono 1 watt audio amplifier. It costs less than $3 in parts! There is also a brief discussion of how to use high pass filters to prevent op-amp oscillation and subsequent noise. Sponsored by The Great Courses […]
Read MoreA tutorial on electrical power and watts. A practical example of light bulb power measurement is shown as well as a demo how to calculate appropriate resistor sizes.
Read MoreA tutorial on the basics of resistance, resistors, and Ohm’s law which describes the relationship between voltage, current and resistance. I also show you how to build a simple resistor + LED circuit. 300 LEDs for $13 500 resistors for $12 9V battery clips Adjustable power supply Ohmnilabs
Read MoreA tutorial on the basics of using LEDs (light emitting diodes). Polarity, forward voltage and current are discussed. 300 LEDs for $13 500 resistors for $12 Adjustable power supply
Read MoreWhat is voltage and what does it do? Learn about volts, coulombs, joules, power supplies and more in this video! Adjustable power supply
Read MoreA description of how a popular 12V DC to 120/240V AC inverter circuit works and its MANY limitations. Watch this video before you build inverter circuits you find online else you risk damaging your equipment!
Read MoreThis video explains what frequency modulation (FM) is and shows a simple low powered FM radio transmitter circuit you can build. It has a range of about 20 meters. PCB Design files
Read MoreDid you know you can use an LED as a light sensor? In this video I show you how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices.
Read MoreA tutorial on zener diodes and how to use them as voltage clamps, voltage regulators, and how to create audio distortion circuits.
Read MoreA tutorial covering the advantages and disadvantages of schottky diodes over regular silicon diodes including forward voltage, efficiency, leakage current and recovery time issues.
Read MoreAn overview of constant current sources and how to build one out of an LM317. Examples are given where you can use a constant current source to drive a string of LEDs or a laser diode.
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