In this video I go through the process of building a simple 12 volt AC to DC power supply.
——————————————————————————————————
My website and forum:- http://www.mjlorton.com
Donations and contributions:- http://www.mjlorton.com
My techie channel MJLorton – Solar Power and Electronic Measurement Equipment – http://www.youtube.com/MJLorton
My Techie Amazon Store: http://astore.amazon.com/m0711-20
My other channel VBlogMag – For almost any topic under the sun! – http://www.youtube.com/VBlogMag
My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20
——————————————————————————————————
===================================================
Video sponsor, Pass Ltd – their websites:
http://www.tester.co.uk/?cmid=QmhzQjcxYjVlc1E9&afid=bFcwbzliNzVDc289&ats=K2EyUjZNTDh3UTA9 – Test Equipment and Test-meter suppliers and
http://www.calibrate.co.uk/?cmid=QmhzQjcxYjVlc1E9&afid=bFcwbzliNzVDc289&ats=S3Yxd2tOMjVISzA9 – Calibration and service of test equipment
===================================================
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
Bitcoin (BTC) Donations: 1K7PeF55e7ssE7W3WVCoa7c4j2PHzy6ASv
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
In this video:
* Using spare parts to build a simple AC to DC power adapter / supply:
Parts used:- transformer, full wave bridge rectifier with Schottky (rectification) diodes, smoothing / filter capacitor, voltage regulator (LM7812 / Zener diode), resistor and LED to display operation.
* Electronic DC load to test the PSU, oscilloscope to view signal, Multimeter to measure output.
* How to calculate RMS voltage?
* How to calculate capacitor value?
* How to calculate ripple voltage?
* How to calculate the resistor value to run an LED?
This is a simple means of calculating the required size of the input filter capacitor in a basic power supply, or calculating the peak-to-peak ripple voltage in an existing supply. It works by assuming that the capacitor supplies current to the load approximately 70% of the cycle—the remaining 30% is supplied directly by the rectified voltage and during this period the capacitor is charged as well:
http://www.electroschematics.com/7048/capacitor-input-filter-calculation/?ModPagespeed=noscript
* Electronics Tutorial #5 – Ohm’s Law Pt 2 – Application:LED Resistor, Voltage Divider, Current Shunt – http://www.youtube.com/watch?v=AWLJADJTWHU
* Electronics Tutorial #7 – Diodes – Zener, Schottky, LED, Silicon – http://www.youtube.com/watch?v=e2qCGpZ8wQ0
* Electronics Tutorial #8 – Diodes – practical applications – http://www.youtube.com/watch?v=d4Z8VI3myBw