5,000 Volt Power Supply
240722 Like and subscribe. This is an archive, check the link in the end if you are owner. In this video I'll show how i built a 5,000 volt power supply. A 48V DC supply inside the box powers a ZVS driver that runs a transformer at 50 kHz. A 200 pF capacitor is placed in series with the transformer output as a power limiter, causing an output impedance of 16 kΩ. This is a really versatile supply, because i have relatively high voltage, high frequency, and a high power output from the transformer (depending on the series capacitor, it could probably output close to 600W safely).
One of the biggest snags of this project was getting the ferrite chokes at the input of the ZVS driver to cooperate. If you have the wrong core material, or the chokes are under-spec'd, the driver will be unstable and go into "latch up" where one of the MOSFETs gets stuck ON, and quickly destroys itself from the heat of short circuiting.
Another issue i discovered was that it's not a good idea to have a transformer over 5kV without having the secondary submerged/potted in some sort of insulator to keep the high voltage from jumping from one winding to another (or to other objects).
Here's some of the parts i used if you want to try building it yourself:
12"x12"x4" Plastic Box:
https://www.amazon.com/dp/B08RJ3GGDZ
48V 12.5A Power Supply:
https://www.amazon.com/gp/product/B079D916WY
Big ferrite transformer core:
https://www.amazon.com/gp/product/B014A9GBRM
24 AWG Magnet Wire:
https://www.amazon.com/BNTECHGO-AWG-Magnet-Wire-Transformers/dp/B01NBM0MB5
20KV 100mA Diodes:
https://www.amazon.com/dp/B074S8JT96
20KV 1nF Capacitors:
https://www.amazon.com/Voltage-Ceramic-Capacitor-0-001uF-1000pF/dp/B07K6PH4SR
Other Components:
MOSFETs:
SIHG25N40D-GE3
400V / 25A Max 0.14Ω RDS
Gate Diodes:
UF4004
400V / 1A Fast Diode
Music Used:
Kevin MacLeod - Lobby Time
Kevin MacLeod - George Street Shuffle
Kevin MacLeod - Groove Groove
Serge Pavkin - Star Twinkle
https://rumblevideoarchive.wordpress.com/
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