Custom Fusor Power Supply

This forum is for specialized infomation important to the construction and safe operation of the high voltage electrical supplies and related circuitry needed for fusor operation.
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Dennis P Brown
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Re: Custom Fusor Power Supply

Post by Dennis P Brown » Thu Jun 10, 2021 11:32 am

Impressive work; you are really setting the bar for a home made power supply for a fusor that most could build. Keep experimenting and posting - you've created a great thread.

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Mark Rowley
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Re: Custom Fusor Power Supply

Post by Mark Rowley » Tue Jul 20, 2021 8:15 pm

Ordered a set of beefier cores and made new secondaries with 2000 turns of #30. Each secondary was wound while submerged in epoxy resin. The single stage multiplier circuits will employ 40kV rated 100mA diodes. Preliminary testing will begin in a few days.

The unmultiplied output in series (under load) could be high enough to operate a fusor with little to no issue. Testing on that aspect will happen later but first will be a reduction in multiplier capacitor value to 510pF. Those items are still on order so the original multiplier module will be employed until then.

E31433B5-9A3C-4167-9037-AB8168CDE43C.jpeg
Mark Rowley

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Richard Hull
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Re: Custom Fusor Power Supply

Post by Richard Hull » Wed Jul 21, 2021 4:14 am

Those are beefy cores! Wound under epoxy resin? Slow setup time I image? Arc proof if under oil for sure.\
Great effort!

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.

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Dennis P Brown
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Re: Custom Fusor Power Supply

Post by Dennis P Brown » Mon Jul 26, 2021 1:13 pm

Where did you get the cores?

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Mark Rowley
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Re: Custom Fusor Power Supply

Post by Mark Rowley » Mon Jul 26, 2021 6:21 pm

Hi Dennis,
Picked them up on Amazon a few months back. The seller recently more than doubled the price for a pair as they’re now almost $26 a set. Id look elsewhere for a better deal.

Mark Rowley

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