Wiring LEDs Correctly: Series & Parallel Circuits Explained Hopefully those looking for practical information on electrical circuits and wiring LED components found this guide first. It’s likely though, you’ve already read the Wikipedia page about Series and parallel circuits here, maybe a few other Google search results on the subject and are still unclear or wanting more specific information as it pertains to LEDs. Simple Blinking LED Circuit: 5 Steps (with Pictures) Simple Blinking LED Circuit: A very simple circuit that you can build to blink or flash LEDs. The last step is to supply power and watch the LEDs blink. I use a 9 volt battery and it worked fine. Could you pls upload a circuit diagram and an explanation as to how this works. Thx A MILLION . 0. feraldrollery. LED circuit - Wikipedia Simple LED (Light Emitting Diode) circuit diagram In electronics , an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current supply (either DC or AC, see below ) to light the LED at the required brightness, but must limit the current to prevent damaging the LED.