Hi all. Just finishing this project up and wanted someone to take a look at these to make sure everything looks ok. The only one that has me a bit concerned is on IC3 pin 7.
Power Supply 9.07v
IC1
1 4.55
2 4.53
3 4.53
4 0
5 3.49
6 4.54
7 4.54
8 9.07
IC2
1 4.54
2 4.54
3 4.53
4 -8.67
5 4.53
6 4.54
7 4.54
8 16.48
IC3
1 9.07
2 4.53
3 0
4 -4.3
5 -8.67
6 4.51
7 6.94
8 9.07
Thanks!
Your voltages are perfect. Pin7 is connected to the internal oscillator of the charge pump. I'm actually not exactly sure of if there is a precision relationship b/w oscillator frequency and voltage on that pin, but I know you can change it by placing a small ceramic cap on that pin. Anyway, I don't think it's anything to be concerned about.
Quote from: madbean on February 25, 2021, 01:45:36 AM
Your voltages are perfect. Pin7 is connected to the internal oscillator of the charge pump. I'm actually not exactly sure of if there is a precision relationship b/w oscillator frequency and voltage on that pin, but I know you can change it by placing a small ceramic cap on that pin. Anyway, I don't think it's anything to be concerned about.
Thank you very much. I appreciate it.