Frequency Plots
| Fan Speed (PWM) | Peak Frequency |
|---|---|
| 10% | 2 kHz |
| 20% | 2 kHz |
| 30% | 2 kHz |
| 40% | 2 kHz |
| 50% | 630 Hz |
| 60% | 400 Hz |
| 70% | 400 Hz |
| 80% | 500 Hz |
| 90% | 500 Hz |
| 100% | 315 Hz |
10% Fan Speed
- Peak frequency: 2 kHz
20% Fan Speed
- Peak frequency: 2 kHz
30% Fan Speed
- Peak frequency: 2 kHz
40% Fan Speed
- Peak frequency: 2 kHz
50% Fan Speed
- Peak frequency: 630 Hz
60% Fan Speed
- Peak frequency: 400 Hz
70% Fan Speed
- Peak frequency: 400 Hz
80% Fan Speed
- Peak frequency: 500 Hz
90% Fan Speed
- Peak frequency: 500 Hz
100% Fan Speed
- Peak frequency: 315 Hz
Signal Recordings
I’ve recorded the signals shown above, but please note that I’ve enabled Automatic Gain Control (AGC) to facilitate their reproduction. The provided recordings are intended for aural identification purposes only.
10% Fan Speed
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
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