[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: OLTC maggy
Original poster: "Antonio Carlos M. de Queiroz by way of Terry Fritz <teslalist-at-qwest-dot-net>" <acmq-at-compuland-dot-com.br>
Tesla list wrote:
> Original poster: "Stephen Conner by way of Terry Fritz
> It should be possible to get nearly 1.0 coupling between coils one and two
> of an OLTC maggy. It could be done by making it out of RF coaxial cable,
> where the core is the secondary and the screen is the primary. You put say
> 100 turns of this on a former, and cut the screen at every turn. Then you
> parallel all the cut ends of the screens. So you have 100 single turn
> primaries in parallel, each tightly coupled to one turn of the secondary.
It seems possible also to interconnect the shields in groups of "n"
turns and then interconnect them with jumpers, making a spiral coil
with a 1:n turns ratio and tight coupling.
Problems of these ideas are that the insulation is limited by the
insulation of the cable, and the huge capacitance between the coils,
typically more than 100 pF per meter of cable. In other hand, this
may be a practical method to make the capacitance in parallel with
the secondary coil required for a true 6th-order magnifier.
Antonio Carlos M. de Queiroz