I have a problem with a design of a flyback converter for a power supply. I am using UCC28C44 PWM IC(UCC28C44 datasheet http://www.kynix.com/uploadfiles/pdf65976/UCC28C44D.pdf ). Converter should star up with at least 200V and VDD should be charged to 14V when 15V should appear on the output and tha...

I have an arduino kit (5v) and instead of just following their simple instructions I want to know why they are using certain resistors for their RGB LED's. The RGB LED that comes with this is identical to this one: LED Indication . And I'm assuming the forward voltage and current is the same. The di...