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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

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Old 20th Apr 2024, 12:47 am   #1
E93AFAN
Tetrode
 
Join Date: Mar 2022
Location: Chippenham, Wiltshire, UK.
Posts: 73
Default Meissner 16-6665 IFs

Years ago I acquired some Meissner 16-6665 10.7Mhz IFs and attached is the catalogue entry for these which is self explanatory.

All are new, boxed, none have any datasheets and the cans do not have any pin numbers or obvious orientation marks (pips, paint spot etc.), the only clues I have is that generally one set of windings is slightly lower in value than the other, typically 4.1uH - v - 4.01uH.

Does anyone know how these IFs should be introduced into a circuit and whether the inductance values give a clue to which is the primary and which the secondary winding.

Any assistance would be gratefully appreciated.
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Old 20th Apr 2024, 1:11 am   #2
VT FUSE
Hexode
 
Join Date: Aug 2010
Location: Malvern, Worcestershire, UK.
Posts: 350
Default Re: Meissner 16-6665 IFs

Before committing to using them, make sure that they are not like the usual 450-470kHz US types where the internal capacitor was of the silver mica type consisting of sheets of mica and silvered part sandwiched at the foot of the transformer and which are frequently suffering from migration of the silver causing rustling noises and degraded performance. Often referred in the US as silver mica disease. Cannot resolve the catalogue image as using iPhone not computer.
Mike
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