Does the component tester recognize the previous FQP you replaced?
Yes, meantime I checked the other two FQPs with the tester, and the measured values are similar 5% differences only
Yes. After power down, the noise disappeard.
But no 100Hz saw-tooth ripple and voltage is adjusting down to 5V DC out now?
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- Salas SSLV1.3 UltraBiB shunt regulator