Why does the output increase

I used the LP2985 and LP2987 chips to convert the output voltage to 5V and 3.3V respectively. Why did the output increase by 800mV to 5.8V and 4.1V?

roseljr09-03-2021 7:49am

erik_squires Details Discussions Posts This discussion Message User 15,959 posts 09-03-2021 at 02:02pm Copy Comment URL Report Comment Edit Delete You would be better off asking this in DIYaudio.com where all the guys with the soldering irons are. Best, Erik
noromance Details Discussions Posts This discussion Message User 9,574 posts 09-03-2021 at 02:27pm Copy Comment URL Report Comment Edit Delete Measure the voltage between your measuring 0v reference and the actual 0volt ground of the amp. There may be a differential of 0.8volts. This would make you see that difference on the measured output of the regulator. Have you added a capacitor on the output?
jnds Details Discussions Posts This discussion Message User 8 posts 09-04-2021 at 04:46am Copy Comment URL Report Comment Edit Delete Lower impedance?