Hi Chris,
The references 3C85 and 3C90 specify only
the material grade but no the shape and size of the toroid.
We are more familiar with Amidon based
references such as FT-50-43 that specifies a ferrite toroidal ring core, grade
43 and 0.5?x0.281?x0.181? in size.
The 3C90 grade comes from Ferroxcube; it
is a Manganese-zinc
(MnZn) ferrite for applications below 100 KHz appropriate for high-level
drive transformers.
73s.
Juan, M0WWA
----- Original Message -----
Sent: Thursday, July 15, 2010 4:47
PM
Subject: LF: Torroids
Hi again Juan,
Sadly after an exchange of e-mails, that website
you gave me cannot supply the correct type of torroids. They say I
need type 78 (for 3C85 or 3C90 equivalent) and they don't do
them.
I wish they'd all stick to the same format for
identification of the various types.
Thanks for trying!
Chris,
G4AYT.
