Highvoltage design challenge.

[swallabat]

I'm after making a low mass high voltage PSU powered from 10volts DC with up to 40A peak current availabilty.

25-30KV DC with a weight of 600 Grammes is my personal best achievement so far using a flyback.

I'd be interested to hear any ideas the members might have for us to reduce the mass of the PSU further...

Cheers, Steve C.

 

[FvM]

Not clear about the specification. What's the intended HV output current? HV floating or one side grounded.

 

[swallabat]

HV floating is good.
5mA will do.

Oddly enough FvM, although I live in England, I am today just up the road from you in haltern am see!

 

[FvM]

30kV*5mA = 150W, that's quite a lot.

Floating HV output means that the secondary winding insulation must be designed for 30 kV + superimposed AC. Demanding!

Hope you enjoy the winter weather in Germany!

 

[D.A.(Tony)Stewart]

35kV High voltage can be generated with much lower mass flyback transformer but there is a relationship to the maximum energy that can be stored and transferred by flyback method in gm/watt which is related to the Bmax saturation level of the core and losses in Watts/kg of the core.

What are you trying to prove again?


Heatwave in Toronto with no snow.

 

[swallabat]

Not trying to prove anything.
We are trying to make something.
The design calls for the lightest HV psu that we can make.
Currently, it's about 600grammes excluding battery.