A transformer is an electrical device that allows the voltage in an alternating current electrical circuit to be increased or decreased, while maintaining the power, which means that the input power is equal to the output power. Here in this video I show you how to make a 18v 5 amp step-down transformer, which we will use for a battery charger. ////////////////////////////////////////////////////////////////// ????⚒????⚡You can buy the E and I silicon plates, the reel and the enameled copper from the following link, they are shipped to all of Peru ???????? : ???? https://www.facebook.com/electronicai... ???? Ask your questions about the video, give it a like and follow us on Facebook: / electronicaivanespinoza //////////////////////////////////////////////////////////////// 1.-Visit the channel, here at youtube you will find a variety of electronics videos. / ivanespinoza-electronica 2.-Visit the website, here the theory of each video. http://www.electronicaivanespinoza.com 3.-Follow us on facebook, here you can contact us and ask your questions about the video. / electronicaivanespinoza Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Visit my youtube channel, there you will find videos of electronics and PIC microcontrollers. / ivanespinoza-electronica :) 1.-Programming of LED matrices (8x30) With the PIC16F873A • Programming of LED matrices with the... 2.-Download and install PROTON IDE/ program to program PICs. • DOWNLOAD AND INSTALL PROTON (Basic) 2015 3.-Police siren circuit. • POLICE SIREN CIRCUIT (how to do it) 4.-TKM baby luminous sign / so they can surprise him with a gift for his girlfriend. • How to make a light sign with LED... 5.-Switch with applause / how to make it. • SWITCH WITH APPLAUSE (in bac... 6.-Heart with tricolor LEDs / to give to your girlfriend. • How to make a heart with LEDs (1) ... 7.-Displacement of letters in an 8x8 LED matrix / programmed with PIC. • How to make an 8X8 LED matrix, c... 8.-Programming of 8x32 LED matrices / programmed with PIC. • Programming of 8X32 LED matrices ... Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Ω Here in my blog, you will find the download links for standardized copper values ​​and calculation of a transformer in word. http://ivanespinozaespejo.blogspot.pe...