Ion Traps

[vts1134]

Thanks Eric.
I disassembled the trap this morning and found that the smaller of the two coils is still intact and reads 3ohms. The break is in the larger coil.

[old_coot88]

How is the focus range now while using the pm trap?

[vts1134]

For those who don't know I was trouble shooting my focus control in relation brightness issue with Bill in some private messages.

Originally Posted by old_coot88

How is the focus range now while using the pm trap?

I'll check on it tonight and let you know. Even though I was 70 ohms low on my bleeder resistor which would have increased current flow, half of that was made back up do to my ion trap being open. I should have read 56 ohms across the trap instead of the normal 21.913 ohms with a good ion trap making me only 34 ohms low on the entire circuit (assuming all other components are on spec).

[vts1134]

The focus is good with the pm trap. I have to turn the focus coil to a strange angle because the trap is pulling the beam in a different angle. I think once I get a replacement electromagnetic trap I'll be in business.
Any one out there have a spare?

[Eric H]

I looked in my garage but didn't find one, I keep forgetting to check at work where I have some of the parts stashed.

[Eric H]

I wonder if it's possible to rewind the open coil? If it's just wound straight across the core it might not be too hard.

Which one is open, the large or small coil?