Frequency Plots
20% Fan Speed
- Peak frequency: 125 Hz (excluding 50 and 63 Hz which are noise from the mains grid)
- 2nd Peak: 200 Hz
30% Fan Speed
- Peak frequency: 400 Hz
40% Fan Speed
- Peak frequency: 500 Hz
50% Fan Speed
- Peak frequency: 400 Hz
60% Fan Speed
- Peak frequency: 500 Hz
70% Fan Speed
- Peak frequency: 500 Hz
80% Fan Speed
- Peak frequency: 400 Hz
- 2nd Peak: 160 Hz
90% Fan Speed
- Peak frequency: 400 Hz
100% Fan Speed
- Peak frequency: 630 Hz
50% Pump Speed
- Peak frequency: 200 Hz
75% Pump Speed
- Peak frequency: 200 Hz
100% Pump Speed
- Peak frequency: 200 Hz
Signal Recordings
I have recorded the signals shown above, but please keep in mind that I’ve enabled Automatic Gain Control (AGC) to do so to make it easier for you to reproduce them. The provided recordings are only offered for aural identification purposes.
20% Fan Speed
30% Fan Speed
40% Fan Speed
50% Fan Speed
60% Fan Speed
70% Fan Speed
80% Fan Speed
90% Fan Speed
100% Fan Speed
50% Pump Speed
75% Pump Speed
100% Pump Speed
Pages:
