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Focus Coil circuits?
Does anyone have any examples of Electromagnetic focus coil circuits theyd be willing to share?
I have an electrostatically focused set that I am attempting to adapt to electromagnetic focus because i got my hands on a CRT, and its NOS.
I found a Merit MF-4 coil listed on ebay, but I do not know which sets it was associated with or how to build a focus coil circuit outside of whats built-in to a normal set.
Thoughts? Thanks.
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