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71
on: May 01, 2025, 09:16:37 21:16
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72
on: May 01, 2025, 08:33:02 20:33
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73
on: May 01, 2025, 08:24:11 20:24
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74
on: May 01, 2025, 08:22:27 20:22
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75
on: May 01, 2025, 08:21:35 20:21
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76
on: May 01, 2025, 08:20:44 20:20
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77
on: May 01, 2025, 08:18:20 20:18
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78
on: April 29, 2025, 05:30:05 05:30
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| Started by max - Last post by max | ||
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in spot welding machine every mains cycle is controlled,
in some low power welding the transformer is on only for one or two mains cycle, the phase angle is controlled for every half cycle according to the output current requirement. |
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79
on: April 28, 2025, 09:25:40 09:25
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| Started by max - Last post by cicos | ||
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There are devices that work by switching on the primary transformers available on aliexpress, but they have their drawbacks (I have one of those) and now I will try the modification that I found on YT.
Pozzz, JaMi |
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80
on: April 27, 2025, 07:01:03 19:01
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| Started by max - Last post by bobcat1 | ||
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If your device sits on the primary side. What I think your device is, is a transformer softstart device to avoid high current at startup. A telltale would be if you have a relay in parallel with the triac. This relay will short out the triac at the point steady for the transformer is achieved This might work if the timing will no longer then 300msec - use a micro to control the relay and the TRIAC All the best Bobi |
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