Example of the use of an oscilloscope to measure Power Supply Rejection Ratio, in this case for a linear voltage regulator.
Power Supply Rejection Ratio or Power Supply Ripple Rejection (PSRR) is a measure of a circuit’s power supply’s rejection expressed as a log ratio of output noise to input noise.
- Arbitrary/Function Generator (built into 6 Series MSO)
- Bench power supply
- Picotest J2120A Line Injector
- DC Load on the output of the DUT
Videos recorded by:
Tony Ambrose, Application Engineer, Tektronix
Steve Sandler, Founder, and CEO of PICOTEST.com