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Using LEDs as mains indicator lights on 120V and 230V (live demos)
bigclivedotcom
Dec 22, 2016
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Chizhevsky ion generator PSU full build
How to Calculate the Correct Resistor for LEDs Light Emitting Diodes
Modifying an old light with LED tape.
Not many people know this, making important tools for your machine steady folow
How I rescued my flashlight. [How to restore dead batteries]
IKEA SMÅHAGEL USB charger teardown
LED Resistor Calculation
A simple guide to electronic components.
Unlock the Amazing Secret to Generating Free 220 Volt Electricity!
Simplest solar light possible, using old phone battery.
Tutorial: How to design a transistor circuit that controls low-power devices
Dodgy mains emergency light. Full build and schematic.
Test of the Yihua 502D USB bench power supply. (With fix!)
How to make an authentic Joule Thief.
Basic Electricity - Resistance and Ohm's law
Building DIY LED lights
Top 10 Free Energy Generator 220volt from Powerful Magnet and Copper wire
Understanding And Diagnosing Classic BMW Motorcycle Charging Systems
Testing Poundland's 2.1A dual port USB power supply. (with 2kV)
What is a schottky diode?