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Registered Member #3324
Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Its not about how many volts are there, its about the current flowing through,
if you have 1A flowing through the transformer at 1:48, you will have a current of around 21mA flowing through a 1 Ohm resistor, however at 1:1000 you will have 1mA flowing through a 1 Ohm resistor at 1A through the primary.
as you can imagine, 0.021V is easier to read then 0.001V
My math may not be correct ( i haven't looked into this stuff all that much) but its still over a whole magnatude difference in reduction.
if you have a higher current flowing through the 1:1000 current transformer, you will likely get it to oscillate.
Registered Member #46012
Joined: Thu May 01 2014, 12:54AM
Location:
Posts: 20
ok. So the problem with my tesla was that I never managed system in zero voltage detection mode. The delay was too big and produced a lot of heating and noise on IGBT's gates.
Now it's fine. Unfortunately, nobody answered and showed me my mistake so I spent a lot of time for debugging.
good morning - I have a few questions regarding UD 2.5 also.
a. for driving large igbt bricks in full bridge, should I use a single output or parallel two outputs on a single gate drive transformer, or use two outputs and two smaller gate drive transformers.
b. is there a rule of thumb regarding how to select the proper inductor range for phase tuning per the size or frequency of the tesla coil?
Hey guys I originally wrote up the UD2 page aimed at answering questions like these - Reading through there first would likely answer many of your questions.
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UD-2.5 - Documentation and help needed
