berger.h
Member level 5
I have RF amplifier 15MHz , working from DC+50V to 50ohm Load.
N-MOSFET transistor have in drain RF choke.
Choke is toroids OD 24mm Ht 7mm (any as T94) painted on White, 11 turn , I measute L=12.4uH
Question is how type material is used?
I have yet found
1. Ferrite **broken link removed** AL=87 [nH]
2. Senddust any as **broken link removed** AL=90 [nH]
Anby other
3.May be HI-FLUX core H090-125A Al=90 [nH]
4 any other ferrites unfortunately I do not found a commercially available replacement for 4C65 (Ferroxcube)
5 Iron powder T94-52 Al=57 [nH], but I thing Iron powder have for this big core lost
Unfortunately, I do not know what rules are selected core parameters in this type coils?
Can you help me
N-MOSFET transistor have in drain RF choke.
Choke is toroids OD 24mm Ht 7mm (any as T94) painted on White, 11 turn , I measute L=12.4uH
Question is how type material is used?
I have yet found
1. Ferrite **broken link removed** AL=87 [nH]
2. Senddust any as **broken link removed** AL=90 [nH]
Anby other
3.May be HI-FLUX core H090-125A Al=90 [nH]
4 any other ferrites unfortunately I do not found a commercially available replacement for 4C65 (Ferroxcube)
5 Iron powder T94-52 Al=57 [nH], but I thing Iron powder have for this big core lost
Unfortunately, I do not know what rules are selected core parameters in this type coils?
Can you help me
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