- Feb 3, 2010
OK, but the issue that I'm having is trying to set R4 to 10k. I set it before soldering, but after it read 3.XX. I tried to dial it back in, but I could never get to the point where I wanted, so I removed the wires and remeasured just the POT solo and it was adjusted clear up to 18k. Now the 7805 was isolated and that's when I was able to read the voltage across the +5V lefg and GND. Maybe what I aught to do is calibrate R4 first, then solder - and go have a beer & not worry. :wink:Njay said:You can't conclude anything from that test unless you have already measured a few known good 7805s.
Tomorrow's another day. KF