74 lines
2 KiB
Plaintext
74 lines
2 KiB
Plaintext
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freq - frequency in Hz
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3.70 - excitation from one battery (3.7V)
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7.40 - excitation from two batteries in series (7.40V)
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In no case the current from excitation is allowed to go above 2A. In no experiment the current is observed to be above 1.5A.
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The results in tables are output voltages measured at 1000:1 HV probe, hence the output voltage is given in kV.
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Push-pull configuration with two TIP122 NPN transistor with 330 Ohms resitor in base is used.
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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 frequency for max output DC voltage is measured, too.
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ETD49 core with 4 isolated layers as secondary, no gaps and 2x3-turn primary
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freq 3.70 7.40
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------------------
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1k 5.28 9.09
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2k 7.33 13.00
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3k 8.72 16.59
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4k 9.96 18.43
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5k 10.79 19.75
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6k 11.22 20.74
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7k 11.46 21.47
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8k 11.57 21.99
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9k 11.60 22.42
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10k 11.42 22.48
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15k 10.93 22.02
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20k 10.52 21.77
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25k 10.21 21.56
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30k 9.86 21.07
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35k 9.40 18.52
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Max power @ 9kHz / 3.7V = 1.71W
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Max power @10kHz / 7.4V = 7.30W
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ETD49 with one isolated layer as secondary, no gaps, 2x2-turn primary
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freq 3.70 7.40
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------------------
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1k 3.16 4.91
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2k 4.25 6.78
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3k 5.11 8.41
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4k 5.70 9.73
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5k 6.14 10.91
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6k 6.47 12.03
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7k 6.80 13.05
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8k 7.07 13.99
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9k 7.28 14.91
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10k 7.45 15.44
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15k 7.96 16.33
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20k 8.08 16.61
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25k 8.05 16.45
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30k 7.93 16.25
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35k 7.81 16.05
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Max power @20kHz / 3.7V = 2.72W
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Max power @20kHz / 7.4V =11.44W
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Trafo #3 (Git repository > Hardware development > 4-HV > Trafos)
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freq 3.70 7.40
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------------------
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1k 6.16 12.87
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2k 8.34 15.55
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3k 9.60 17.33
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4k 10.32 18.42
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5k 10.98 19.48
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6k 11.22 19.85
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7k 11.20 20.37
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8k 10.66 21.07
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9k 11.94 21.82
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10k 11.19 22.12
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15k 9.65 22.17
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20k 9.35 21.68
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25k 7.64 21.23
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30k 7.56 17.17
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35k 8.86 18.22
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Max power @ 9kHz / 3.7V =1.06W
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Max power @15kHz / 7.4V =4.10W
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