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Bottlehead ouput transformers are so small?
Observe, before you think. Think before you open your yap. Act on the basis of experience.
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I am working my way through the 025 series. DS-025 to ES-025 to....something silver, in a while.
Observe, before you think. Think before you open your yap. Act on the basis of experience.
2A3 Parafeed.I have a pair of parafeed 2A3 OT from Bottlehead/Magnequest which are quite expensive but small.
Edits: 02/11/15
Magenquest does wind big transformers, I have some.
Smaller is cheaper.
Big Magnequest transformers are typically their gapped units, or parallel feed units designed for high power/voltage designs. (Like the FS-100PF, I have a pair and they are huge!)
A parafeed OPT doesn't have to be as large as a series feed OPT to handle the same AC (and be just as good at it if not better) because the parafeed OPT is not having to handle the DC.
But you need a plate choke.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
You hit the nail on the head, Tre. Thanks.
Builder of MagneQuest & Peerless transformers since 1989
In which case, 'big' is OK.
This is a question that would be better addressed on the Bottlehead forum.
Way back when Western Electric was designing bigger and bigger transmitters, they ended up with iron designs that became difficult (if not impossible) to be wound because of size. They developed parallel feed to address this, which requires twice the individual pieces of iron (a choke and an output transformer per channel), but each piece ends up being less than half the weight of the original.
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