The basics of how transformers work, where to shop for step down mains transformers, and how to wire one up to mains voltages. European and North American wiring is discussed. DO NOT FORGET TO ADD A FUSE. Finally, a quick example of AC to DC conversion in an unregulated dual rail power supply. Watch the followup video on diodes and AC to DC conversion here: http://www.youtube.com/watch?v=cyhzpFqXwdA
Example transformer: http://www.amazon.com/exec/obidos/ASIN/B00SOXR16Q/afromods-20
Check out my website for more videos about electronics! http://www.afrotechmods.com
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https://www.youtube.com/watch?v=GMePE7NZcxw
Afroman reviews Siglent's SSA3000X series spectrum analyzer and all the options. There is some RF information for beginners and 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
6:18 Average noise measurements
9:11 Phase noise
9:46 Spurious readings and possible shielding issue
12:25 Amplitude accuracy
12:40 Tracking generator evaluation and experiments
15:35 Advanced measurement kit option
16:13 EasySpectrum software and EMI measurement option
17:47 Introduction to measuring antenna performance
19:30 Reflection measurement software and hardware experiment
21:35 Reflection bridge hardware directivity discussion
22:36 Limitations of directivity experiment
24:18 Final judgement and conclusion
Blow your mind at http://www.afrotechmods.com
Twitter: http://twitter.com/Afrotechmods
Facebook: http://www.facebook.com/Afrotechmods/
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https://www.youtube.com/watch?v=uA4SvTBCAXU
A tutorial on the basics of using LEDs (light emitting diodes). Polarity, forward voltage and current are discussed.
300 LEDs for $13: http://www.amazon.com/exec/obidos/ASIN/B00UWBJM0Q/afromods-20
500 resistors for $12: http://www.amazon.com/exec/obidos/ASIN/B008MH97I4/afromods-20
Adjustable power supply: https://www.amazon.com/exec/obidos/ASIN/B00LG1TGSE/afromods-20
Previous video on volts: http://www.youtube.com/watch?v=TBt-kxYfync
Next video on resistors: http://www.youtube.com/watch?v=NfcgA1axPLo
Website: http://www.afrotechmods.com Twitter: http://twitter.com/afrotechmods Facebook: http://bit.ly/2cMrAeu
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https://www.youtube.com/watch?v=Yo6JI_bzUzo
What is inside an uninterruptible power supply? A lot of useful components! I show you a teardown of a UPS and uses some of the components inside to build a battery charger that will work with most types of batteries.
Webpage: http://www.afrotechmods.com
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https://www.youtube.com/watch?v=YzrKIYNPn4o
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: http://xod.io/?utm_source=afrotech&utm_medium=youtube&utm_campaign=servos
Another XOD tutorial: http://www.youtube.com/watch?v=qxjLH_3US04
Hitec HS-311 servo: http://www.amazon.com/exec/obidos/ASIN/B0006O3WVE/afromods-20
Sub-micro servo pack: http://www.amazon.com/exec/obidos/ASIN/B015H5AVZG/afromods-20
Laser diodes: http://www.amazon.com/exec/obidos/ASIN/B01ITK4PEO/afromods-20
Pan-tilt servo kit: http://www.digikey.com/products/en?keywords=1528-1106
Webpage: http://www.afrotechmods.com
Twitter: http://www.twitter.com/Afrotechmods
Facebook: http://www.facebook.com/Afrotechmods
#Arduino #Engineering #Lasers
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https://www.youtube.com/watch?v=iH9_xtulyws
A 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.
Website: http://bit.ly/2gHy8xd Twitter: http://twitter.com/afrotechmods Facebook: http://bit.ly/2cMrAeu
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https://www.youtube.com/watch?v=VSpB3HivkhY
Random video. The colour changes a bit as the current gets turned up. More at http://www.afrotechmods.com
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https://www.youtube.com/watch?v=h2UWAmcjtuE