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Recent content by doom3cool3

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    I want to build a controllable high voltage power supply

    Hello everybody,long time no see!! Why the voltage will drop in this circuit?
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    I want to build a controllable high voltage power supply

    Its real hard to control a n stages capacitor is n time value of the last ones.But it seems that its only way I can do. Thanks a lot.
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    I want to build a controllable high voltage power supply

    Thanks so much So what kind of capacitor should I choose you think is better? Since the input is from variac and I guess its frequency is 60Hz.
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    I want to build a controllable high voltage power supply

    Thanks a lot you guy. I say "Temporarily". Because some research indicated the current don't effect on the ion wind velocity much,also Cockcroft–Walton circuit output very small current.And I will step by step to fix this circuit to completely safe and stable All I have to worry about now is...
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    I want to build a controllable high voltage power supply

    Thanks man! I want to supply at most 15KV DC voltage. Temporarily not care the current. I trying to make an ion wind blower to analysis the relationship between air velocity and voltage,so I need to build a adjustable high voltage supply that can offer me different voltage. And most important...
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    I want to build a controllable high voltage power supply

    Thanks so much. I mean the output voltage from Cockcroft–Walton circuit,not the iron core transformer. Because when variac output 200VAC to the Cockcroft–Walton circuit,the final voltage had not been multiplied as the theoretical value. So I guess any voltage higher than 200VAC input would...
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    I want to build a controllable high voltage power supply

    Thanks again I have tested that when variac input up to 200VAC,the 10 stages Cockcroft–Walton circuit shown that the output voltage had dropped from its theoretical value,which is 200*10*1.4=2800V So if I still use the new transformer after variac,the output voltage may not be multiplied as...
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    I want to build a controllable high voltage power supply

    Thanks so much! So what kind of transformer should I choose to add after variac? The picture you show me looks like the the transformer has one coil like variac.
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    I want to build a controllable high voltage power supply

    As the first post in this discussion,I want to build a controllable high voltage power supply,which means I can adjust the input and get the different output high voltage. I use the variac as input which can operate in a range of 0~260VAC with 5A,then connect with a Cockcroft–Walton circuit.I...
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    I want to build a controllable high voltage power supply

    Thanks so much you guy. Another question is can I connect a transformer after variac so that it can step up the voltage again? That's means when I adjust the variac,the new transformer will output another higher voltage. If I can,how should I wind this kind of transformer. Thanks again!
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    I want to build a controllable high voltage power supply

    Hello,just as the title,I want to build a controllable high voltage power supply,which means I can adjust the input and get the different output high voltage. I use the variac as input which can operate in a range of 0~260VAC with 5A,then connect with a Cockcroft–Walton circuit.I used 1N4007 as...

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