As for the DC resistance on the transformer. you are correct, that number is wrong! I thought I had fixed that on PSUD! the data sheet on the PT shows it to be more like 277 ohms. I'll fix that.
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Sounds good, please use the ohms from one leg only, not across the whole HV winding (it's to do with the way PSUD2 works). Also please factor into account the resistance of the primary to give an overall impedance, there's some details in the following text to help with this.
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If it's possible to measure the resistance of one leg and the primary, and also measure the off-load voltage you can get a good approximation of what the source impedance should be with the Source Impedance Calculator built into PSUD2.
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Right click on the transformer and select edit:
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This will give you the Edit transformer properties dialog:
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Click the [...] button shown and you will get the Source Impedance Calculator:
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From here, you can enter the mains supply voltage and primary winding resistance, also the secondary voltage and resistance (one leg only). It will then figure out an estimate of the source impedance for you. Please be aware the off load voltage will be higher than the rated secondary voltage of the transformer; that's what it will provide when it's loaded down.
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Regards,
Duncan
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