Author Topic: Lorad 200 kV x-ray generator  (Read 157 times)

Offline Duane B

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Lorad 200 kV x-ray generator
« on: September 11, 2021, 10:50:29 PM »
I thought you guys might like to see the high voltage generator in a Lorad 200-kV 5-ma x-ray head. The head is pressurized with 65 PSI of SF6.
Duane Bylund

Offline johnf

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Re: Lorad 200 kV x-ray generator
« Reply #1 on: September 12, 2021, 09:26:00 AM »
At last a commercial Multiplier that has been designed
ie caps that are larger at the bottom going to smaller at the top to keep energy in the stack constant

Online Da_Stier

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Re: Lorad 200 kV x-ray generator
« Reply #2 on: September 12, 2021, 04:35:54 PM »
Very nice, it is always cool to see how a commercial design is made.
For 200kV it is a rather compact unit, isn't it?

I was wondering about the different size capacitors.
John said it is to keep the energy constant.
So I guess the bigger ones in the bottom have higher capacitance?
Since the Voltage goes to the Energy squared (E = 0.5 * C * U²) you use more capacitance in the bottom to compensate for it, right?



Thanks for the look and greetings,
Michael

Offline Duane B

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Re: Lorad 200 kV x-ray generator
« Reply #3 on: September 12, 2021, 05:55:06 PM »
I always thought that the larger capacitors were used at the bottom because there was more current there to charge them and it would provide a more stable voltage base for the following stages.

Below is a couple of photos of a Lorad 160kV 5ma high voltage generator. You can see the high voltage insulated ferrite transformers that provide filament voltage here a little better.



Duane Bylund

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Re: Lorad 200 kV x-ray generator
« Reply #3 on: September 12, 2021, 05:55:06 PM »

 


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