secondary table
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ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
2
Micro DRSSTC (less than 0.5 kW) and Mini DRSSTC (less than 2 kW)
Table, data and calculations by Mads Barnkob / www.kaizerpowerelectronics.dk - 2016
3
4
(mm)(mm)(mm)(mm)
Secondary coil
H/W
Toroid topload
Secondary system
Max frequency for 100%
5
Wire dia.
Wire spacing
Turns
Coil dia.
Coil length
Inductance (uH)
ratio
major (inch)
minor (inch)
Cap. (pF)
Fres (kHz)
impedance (Ohm)
skin depth of wire
Skin depth (m)
Resistance DC
skin effect factor
Resistance AC
Q unloaded
skin effect factor (rev2)
6
0.090.00916004015822854.294.06.2361.5756.89540157572
2250 kHz
0.0001063565.7281.00000001697.18533.9221.0000000
7
0.090.00920004019829163.025.07.7951.5758.35732259072
2250 kHz
0.0001186707.1601.00000002121.48127.8451.0000000
8
0.10.0114604016118795.354.06.3231.5756.98243951883
1750 kHz
0.0001016418.1441.00000001254.43241.3601.0000000
9
0.10.0118304020124048.605.07.9251.5758.47035353284
1750 kHz
0.0001134524.1121.00000001572.33633.8881.0000000
10
0.1270.012711504016111657.544.06.3251.5756.98555840854
1100 kHz
0.0000902204.2041.0000000612.61166.6881.0000000
11
0.1270.012714304020014787.625.07.8651.5758.41845141912
1100 kHz
0.0001003253.9231.0000000761.76855.0201.0000000
12
0.1430.01431020401609181.634.06.3171.5756.97662936278
870 kHz
0.0000849142.8571.0000000428.57184.6501.0000000
13
0.1430.014312804020111763.065.07.9271.5758.47250437263
870 kHz
0.0000948179.2711.0000000537.81469.2851.0000000
14
0.160.016900401587231.244.06.2361.5756.89571332384
690 kHz
0.0000798100.6881.0000091302.065107.2101.0000091
15
0.160.0161130401999271.795.07.8301.5758.38857133248
690 kHz
0.0000891126.4191.0000000379.25687.6661.0000000
16
0.10.0118005019836156.194.07.7951.9698.61928564769
1750 kHz
0.0001261644.4001.00000001933.20033.5031.0000000
17
0.10.0122905025247025.475.09.9171.96910.59722566615
1750 kHz
0.0001418819.8201.00000002459.46027.0851.0000000
18
0.1270.012714405020122812.214.07.9201.9698.74435651076
1100 kHz
0.0001128319.6231.0000000958.86953.2671.0000000
19
0.1270.012718005025129100.755.09.9001.96910.58228752440
1100 kHz
0.0001257399.5291.00000001198.58643.7521.0000000
20
0.1430.014312805020118010.294.07.9271.9698.75140145365
870 kHz
0.0001063224.0891.0000000672.26867.4811.0000000
21
0.1430.014316005025222974.735.09.9091.96910.59032346578
870 kHz
0.0001185280.1111.0000000840.33455.4281.0000000
22
0.160.01611505020214469.474.07.9691.9698.79344640566
690 kHz
0.0001008160.8201.0000000482.46184.0811.0000000
23
0.160.01614305025218351.975.09.9091.96910.59036141629
690 kHz
0.0001121199.9771.0000000599.93069.3901.0000000
24
0.20.02910502009149.744.07.8821.9698.70656432418
430 kHz
0.000089781.4451.0107864246.970131.2641.0107864
25
0.20.0211405025111700.825.09.8741.96910.56045333288
430 kHz
0.0001001102.0301.0000000306.090108.7511.0000000
26
0.160.01617007529948056.004.011.7802.95313.01620160763
690 kHz
0.0001501356.6021.00000001069.80556.7981.0000000
27
0.160.01621507537862094.115.014.8982.95315.91416062464
690 kHz
0.0001683450.9961.00000001352.98846.1671.0000000
28
0.20.0213707530131004.934.011.8662.95313.10325048644
430 kHz
0.0001348183.9231.0000000551.76888.1611.0000000
29
0.20.0217007537439240.335.014.7242.95315.76420249892
430 kHz
0.0001497228.2251.0000000684.67572.8691.0000000
30
0.250.02510807529719524.354.011.6932.95312.92831738861
270 kHz
0.000119692.7941.0018439278.894139.3401.0018439
31
0.250.02513707537725313.775.014.8332.95315.85825139953
270 kHz
0.0001344117.7101.0000000353.131113.1391.0000000
32
0.30.039007529713558.574.011.6932.95312.92838032384
170 kHz
0.000109253.7001.0798382173.962186.1581.0798382
33
0.30.0311307537317384.615.014.6812.95315.72730433248
170 kHz
0.000122167.4231.0359689209.545158.6661.0359689
34
0.350.035770752969941.074.011.6712.95312.90644427753
130 kHz
0.000101033.7541.2176170123.299225.0881.2176170
35
0.350.0359807537712935.595.014.8542.95315.87735128544
130 kHz
0.000113642.9601.1402495146.955194.2331.1402495
36
37
38
39
40
http://g3ynh.info/zdocs/comps/Zint.pdf
41
http://g3ynh.info/zdocs/magnetics/appendix/hb9dfz/Mathcad_Coil_calc_w_Medhurst_et_G3YNH_131014.pdf
42
http://g3ynh.info/zdocs/magnetics/SolenoidZ.pdf
43
44
45
Medium DRSSTC (less than 10 kW) and Large DRSSTC (less than 20 kW)
Table, data and calculations by Mads Barnkob / www.kaizerpowerelectronics.dk - 2016
46
47
(mm)(mm)(mm)(mm)
Secondary coil
H/W
Toroid topload
Secondary system
Max frequency for
48
Wire dia.
Wire spacing
Turns
Coil dia.
Coil length
Inductance (uH)
ratio
major (inch)
minor (inch)
Cap. (pF)
Fres (kHz)
surge imp. (Ohm)
100% skin depth
Skin depth (m)
Resistance DC
skin effect factor
Resistance AC
Q unloaded
49
0.20.02200011044097319.304.017.3234.33119.13611771313
430 kHz
0.0001972393.8001.00000001181.40060.363
50
0.20.022500110550124160.235.021.6544.33123.1719473201
430 kHz
0.0002198492.2501.00000001476.75049.569
51
0.250.025160011044062284.354.017.3234.33119.13614657051
270 kHz
0.0001764201.6261.0000000604.87794.318
52
0.250.025200011055079462.545.021.6544.33123.17111758561
270 kHz
0.0001966252.0321.0000000756.09677.451
53
0.30.03133011043943133.964.017.2804.33119.09317547531
170 kHz
0.0001608116.3901.0000000349.169136.125
54
0.30.03165011054554584.975.021.4374.33122.98314248734
170 kHz
0.0001786144.3931.0000000433.180112.503
55
0.350.035115011044331996.444.017.4314.33119.24520340775
130 kHz
0.000149573.9381.0216636226.619179.927
56
0.350.035142011054740278.795.021.5244.33123.05816541795
130 kHz
0.000165791.2971.0028344274.668152.165
57
0.40.04100011044024329.824.017.3234.33119.13623335657
107 kHz
0.000139449.2251.1010039162.591219.303
58
0.40.04125011055031040.065.021.6544.33123.17118836600
107 kHz
0.000155461.5311.0522396194.237188.432
59
0.30.031950160644133907.794.025.3356.29927.9738269189
270 kHz
0.0002348248.2131.0000000744.64092.915
60
0.30.032400160792167979.005.031.1816.29933.4306770886
270 kHz
0.0002598305.4931.0000000916.48077.346
61
0.350.035165016063596993.184.025.0106.29927.6469759232
170 kHz
0.0002160154.3051.0000000462.916127.953
62
0.350.0352080160801124898.785.031.5286.29933.7317860850
170 kHz
0.0002418194.5181.0000000583.555104.276
63
0.40.04145016063874614.624.025.1186.29927.75511151849
130 kHz
0.0002025103.8201.0000000311.460166.470
64
0.40.04180016079294488.195.031.1816.29933.4309053165
130 kHz
0.0002250128.8801.0000000386.640137.504
65
0.450.045130016064459514.574.025.3356.29927.97312346126
107 kHz
0.000191773.5451.0223615225.568204.487
66
0.450.045160016079274657.335.031.1816.29933.43010147257
107 kHz
0.000212190.5171.0032737272.439173.461
67
0.50.05115016063347299.984.024.9026.29927.5371394144568 kHz0.000180352.6981.0842436171.411241.789
68
0.50.05145016079860927.405.031.3986.29933.6181114257168 kHz0.000201966.4451.0384042206.990205.669
69
0.40.041800200792144624.784.031.1817.87434.4767164769
130 kHz
0.0002522161.1001.0000000483.300134.013
70
0.40.042250200990184547.245.038.9767.87441.7875766456
130 kHz
0.0002813201.3751.0000000604.125110.003
71
0.40.0427302001201227246.956.047.2917.87448.5954868384
130 kHz
0.0003077244.3351.0000000733.00593.292
72
0.450.0451600200792114271.434.031.1817.87434.4768057572
107 kHz
0.0002378113.1461.0000000339.437169.611
73
0.450.04520302001005148184.835.039.5617.87442.2956459191
107 kHz
0.0002671143.5541.0000000430.661137.443
74
0.450.04524202001198179025.496.047.1617.87448.4955460759
107 kHz
0.0002897171.1331.0000000513.399118.346
75
0.50.05145020079893268.274.031.3987.87434.694885184968 kHz0.000226483.0561.0090083251.413206.230
76
0.50.051800200990118110.245.038.9767.87441.787725316568 kHz0.0002516103.1041.0000000309.312171.880
77
0.50.0521702001194144440.806.046.9887.87448.361605465168 kHz0.0002744124.2981.0000000372.893146.559
78
0.60.06120020079264277.684.031.1817.87434.4761074317951 kHz0.000205947.7331.1090336158.814271.886
79
0.60.061530200101083798.345.039.7567.87442.463844442351 kHz0.000231860.8601.0544651192.524230.741
80
0.60.0618202001201100998.646.047.2917.87448.595724558951 kHz0.000251272.3961.0271504223.083204.359
81
0.70.07105020080948308.864.031.8317.87435.1281223708434 kHz0.000192630.6861.2533324115.378321.411
82
0.70.071300200100160985.735.039.4097.87442.164993803234 kHz0.000213737.9921.1786524134.338283.105
83
0.70.071550200119473694.286.046.9887.87448.361843903634 kHz0.000231945.2981.1284631153.351254.555
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
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