Perhaps provide a summary baseline:
circuit schematic = ...
circuit operating load = ... Adc measured by ....
measurement with scope of 100Hz ripple = ...mVpp
calibration reference ...Vdc with scope displays ...mVdc
measurement of ripple with true rms meter (model ....) = ... mVrms
PSUD2 sim of ripple using post #... is ... mVrms
Perhaps start by going through the scope operating manual and see what timebase calibration controls are available. The hum waveform period should equate to 100Hz. The transformer secondary voltage waveform period should equate to 50Hz.
Make any comparison measurements with exactly the same circuitry, and keep the circuitry as simple as possible - ie. temporarily remove any quasimodo snubbers; don't change any scope or probe settings.
Provide a photo of your test setup to show where you are probing in post #23, and the power transformer and rectifier parts. Provide a circuit or function block sketch of the power supply and amplifier configuration within the enclosure.
circuit schematic = ...
circuit operating load = ... Adc measured by ....
measurement with scope of 100Hz ripple = ...mVpp
calibration reference ...Vdc with scope displays ...mVdc
measurement of ripple with true rms meter (model ....) = ... mVrms
PSUD2 sim of ripple using post #... is ... mVrms
Perhaps start by going through the scope operating manual and see what timebase calibration controls are available. The hum waveform period should equate to 100Hz. The transformer secondary voltage waveform period should equate to 50Hz.
Make any comparison measurements with exactly the same circuitry, and keep the circuitry as simple as possible - ie. temporarily remove any quasimodo snubbers; don't change any scope or probe settings.
Provide a photo of your test setup to show where you are probing in post #23, and the power transformer and rectifier parts. Provide a circuit or function block sketch of the power supply and amplifier configuration within the enclosure.
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