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Fire Power: Electricity from heat

Power Electricity,Project Builds,Tech Misc,Fire Power,Heat,Electronics

Portable Power Supply

I have bunch of old power adapters (those with transformers) and some laptop power supplys that are around 16-20v but i needed 12v for charging lead acid batteries. Since 12v lead acids charge at around 14.4v i had to lower voltage from 16v (we in case with laptop charger from 19v) down to 14.4v to charge lead acid battery. Easiest way to drop down voltage is to use cheap ebay step down converters. They are really cheap 1-3€ and work really good and max current is 3A which is enough for...

Using a Voltage Regulator as a Constant Current Source

[Afroman] contacted us to share his new video on the The humble adjustable voltage regulator is everywhere. From wifi routers, to high spec lab equipment. Given a noisy input and a variab...

Electric Motors

Which Components Are Worth Salvaging From Electronic Devices (And Where They Are Found) - 2

- ELECTRICITY - A visual cheat sheet about electrical physics, containing the most important formulas of current and Ohm's law expressed through an impossible water circuit analogy.

How Does A Capacitor Work?

Great resource of capacitors working process and what it is? Along with circuit diagram, ratings, properties and more.