Thread: Focus Coil circuits?
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Old 12-21-2021, 07:36 PM
mbates14 mbates14 is offline
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Quote:
Originally Posted by Yamamaya42 View Post
Something does not add up here...

according to frank.pocnet.net datasheets, BOTH the 17FP4 and the 17HP4 have electrostatic focus and the same bias of 12L

https://frank.pocnet.net/sheets/127/1/17HP4.pdf
https://frank.pocnet.net/sheets/127/1/17FP4.pdf
and thus are pretty much the same.
Meaning focus is p6 and magnetic focus wont work.
Is the " 17FP4" above an error? cause it does show it as ES focus.
That's what I thought it was, but it is not an electrostatic focus tube. the Tube literally has no markings though, and the box says 17FP4. See pics:



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