I have built four K8063 projects and like them very well, but now I’d like to drive four larger digits, 5 inches in size. I think that they would draw about 200 mA. Is there a mod which I can make to my K8063 circuit board to enable it to drive this larger digit? I plan on using a separate power supply for each pair, to keep the current down in the PCBs. Would a transistor swap do the trick here? If so, what should I use? Any advice appreciated!
Sorry, there is no modification available at this time.
OK, I didn’t expect that there would be a packaged mod available; what I need is for someone with more electronic expertise than I have to suggest to me what would work. Right now I’m at an inmpasse; I like the K8063 circuit boards because they’re easy to run from my PC, but I have these big digits which I need to drive. I really need someone to suggest something!
In case anyone else is trying to solve this, I got some help which worked: swapping out the 9V 7809 regulator for a 12 volt 7812, and making sure that the supply voltage was at least 12 volts.