This is a long shot but I wanted to try anyway. Over the past year I've been working on my A2 coursework. For part of it I had to design a circuit using Circuit Wizard 2.0. Designed it, went through everything, made the PCB, soldered everything in and ironed out the mistakes I made when I was doing that. Here's the hard part - For some reason the 0V rail is receiving around 7-8V. I can't find why this is happening, there is no connection to the positive, and I've checked for a stray wire or loose connection. I'm out of ideas on what it could be and so is my teacher. Also, in my class of 9, only one other person has their circuit working, all of the others have a myriad of faults for no apparent reason. Could it be that my school uses cheap components or have i made a mistake in designing my circuit? I replaced the original 7805 with another but same problem.
In the post which led me to this website (link: https://forum.allaboutcircuits.com/threads/lm317-vs-7803.37268/ ) I saw that the capacitors needed were 0.33uF and 0.10uF. I was told to use 0.10uF capacitors for both, so could this be the problem? Any help at all would be hugely appreciated, thanks.
In the post which led me to this website (link: https://forum.allaboutcircuits.com/threads/lm317-vs-7803.37268/ ) I saw that the capacitors needed were 0.33uF and 0.10uF. I was told to use 0.10uF capacitors for both, so could this be the problem? Any help at all would be hugely appreciated, thanks.