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MikeHow would I setup the parameters in LTSpice on the above mentioned transformer.
And do you have any schematic examples? I'm rather new to parafeed and understand this IT doesn't use the normal gap?
And what are the advantages? Better freq response?
Edits: 12/29/15Follow Ups:
Happy new year to you!First we should ascertain whether your RIT-5 is airgapped (series feed) or a parafeed implementation. If it is a series feed type it will most likely have written on the coil wrapper how much DC current it was gapped for. If you could post a photo of your unit showing the product id that would be helpful.
For advantages and theory of parafeed I recommend doing a Google search maybe using "Bottlehead parafeed primer" as your search term.
I generally do not recommend reliance on LTSpice as a design tool because as a simplifying model it excludes too many important design parameters which leads to erroneous results. Much better to evaluate proposed solutions empirically. Or to use some alternate models such as Voltsec's parafeed calculator.
And IMO an even more elegant solution is to go with LC coupling in lieu of the IT. If you think about it a 1:1 IT is a plate choke plus grid choke wrapped into one. Separating out these functions as in LC coupling permits greater optimization.
MSL
Builder of MagneQuest & Peerless transformers since 1989
Edits: 01/02/16
I don't have that IT, I was just asking about it purpose.
I like your idea about the LC, it seems to work fine in the sim.
What is the inductance of your grid chokes you sell? And is the BCP-15 OK to run just over 40ma?
Also need physical size of BCP 15 since it would be replacing a 126B Hammond.
Edits: 01/05/16
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