Hello,
I am building a negative-hot power supply to output 40KV DC at 20 milliamps. In order to achieve this I was planning on simply getting a high voltage transformer and connecting to a variac (to vary the voltage) , and then using diodes to get the DC.
Now, my idea right now is to modify a microwave oven transformer by taking out both coils and rewinding it as a core-type transformer (instead of the shell type MOT's seem to be). I would wind the transformer in a ratio of 10:10,000 and of course, to prevent arcing, submerge the transformer in mineral oil and pull a vacuum on it. The reason I thought of modifying the MOT is because the core is already used to 60Hz and they have KVA ratings high enough to handle the power.
What do you think of this? Could it work?
Also, another question, in order to make it "negative hot" all I need to do is connect the positive lead of the secondary to ground correct?
I am building a negative-hot power supply to output 40KV DC at 20 milliamps. In order to achieve this I was planning on simply getting a high voltage transformer and connecting to a variac (to vary the voltage) , and then using diodes to get the DC.
Now, my idea right now is to modify a microwave oven transformer by taking out both coils and rewinding it as a core-type transformer (instead of the shell type MOT's seem to be). I would wind the transformer in a ratio of 10:10,000 and of course, to prevent arcing, submerge the transformer in mineral oil and pull a vacuum on it. The reason I thought of modifying the MOT is because the core is already used to 60Hz and they have KVA ratings high enough to handle the power.
What do you think of this? Could it work?
Also, another question, in order to make it "negative hot" all I need to do is connect the positive lead of the secondary to ground correct?