Afrotechmods

A 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...

This 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.
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Subtitles: http://www.afrotechmods.com/subtitles.zip
Email to: afro (at) afrotechmods.com
Double check the existence of subtitles on videos before submitting your own!

Did 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.

A tutorial on zener diodes and how to use them as voltage clamps, voltage regulators, and how to create audio distortion circuits.
300 assorted zener diodes on Amazon for $10: http://www.amazon.com...

This PIC was rated for 3.3 volts. I gave it 16. Now I need new power leads.
http://www.afrotechmods.com/support/support.htm

What is electrical current? What are amps? Find out in this video!
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How to use an N channel MOSFET (a type of transistor) to turn anything on and off! Also, remember to put a 100k resistor between gate and ground if you want your FET to stay off by default.
IRFZ44 ...

What to look for in a multimeter and how to use a multimeter to measure voltage, current, resistance and continuity.
Recommended multimeter: http://www.amazon.com/exec/obidos/ASIN/B0050LVFS0/afromo...

The basics of linear voltage regulators - what they do, how to wire them up, and where to find them. Then I give a basic example of how to build a 5V supply that can power USB powered gadgets.
5 vo...

Capacitance, voltage ratings and polarity are explained. You can replace faulty caps on your circuit board and bring your electronics back to life! Example of a high quality replacement capacitor: ...

Don't do anything I did in this video. These capacitors are not designed to be shorted and doing so is dangerous. And no, you cannot make a welder out of these. I got hold of some 2600F capacitors ...

The rapid expansion of CO2 when dry ice comes into contact with another surface results in some interesting sounds as it tries to escape. When squeezed in a vice, a screaming noise is made. When cu...

DDR2 takes 12V... right? Check out my webpage all about electronics: http://www.afrotechmods.com

What to look for in a multimeter and how to use a multimeter to measure voltage, current, resistance and continuity.
Recommended multimeter: http://www.amazon.com/exec/obidos/ASIN/B0050LVFS0/afromo...

How to use an N channel MOSFET (a type of transistor) to turn anything on and off! Also, remember to put a 100k resistor between gate and ground if you want your FET to stay off by default.
IRFZ44 ...

The basics of linear voltage regulators - what they do, how to wire them up, and where to find them. Then I give a basic example of how to build a 5V supply that can power USB powered gadgets.
5 vo...

This video covers the basics of diodes, bridge rectifiers, and how to build simple unregulated AC to DC power supplies than can handle a few mA up to several Amps.
General purpose 1A diodes: http:/...