2025-01-22 19:21:18 +01:00
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freq - frequency in Hz
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7.40 - excitation from two batteries in series (7.40V)
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2025-01-25 18:39:22 +01:00
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15.00 - excitation from four batteries in series (hypothetical, power supply is used)
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2025-01-22 19:21:18 +01:00
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Audio amplifier TDK2040 is tested.
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2025-01-25 18:39:22 +01:00
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A single cascade is used with 30 capacitors and 60 (30x two-in-series) diodes 1N4007.
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Power supplied by RIGOL DP832 at the frequency for max output DC voltage is measured, too.
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2025-01-22 19:21:18 +01:00
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Sinusoidal excitation so that audio goes into saturation.
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ETD49 core with 4 isolated layers as secondary, no gaps and 3-turn primary
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freq 7.40 15.00
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------------------
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1k 1.94 3.37
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2k 3.67 7.17
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3k 4.73 9.51
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4k 5.55 10.93
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5k 6.07 11.85
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6k 6.38 12.55
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7k 6.55 13.03
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8k 6.63 13.44
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9k 6.64 13.73
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10k 6.62 14.00
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15k 6.31 14.51
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20k 5.92 14.53
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25k 5.58 14.38
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30k 5.24 13.93
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35k 4.85 13.11
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Max power @9kHz / 7.4V = 0.64W
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Max power @10kHz /15.0V = 2.01W
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