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Browse Prior Art Database

Pulse Transformer

IP.com Disclosure Number: IPCOM000098757D
Original Publication Date: 1959-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Lecher, CT: AUTHOR

Abstract

When the turns ratio of a toroid core employed as a pulse transformer dictates a small number of turns in the secondary, efficiency of the transformer may be substantially reduced by flux leakage. Such reduced efficiency is particularly undesirable in low power high frequency pulse circuitry.

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Pulse Transformer

When the turns ratio of a toroid core employed as a pulse transformer dictates a small number of turns in the secondary, efficiency of the transformer may be substantially reduced by flux leakage. Such reduced efficiency is particularly undesirable in low power high frequency pulse circuitry.

To increase the efficiency of the transformer by increasing mutual inductance between primary and secondary windings, pairs of twisted wires are wound on the core, the number of pairs of twisted wires being equal to the turns ratio desired.

One wire from each pair of windings is connected in parallel with one wire of each of the other windings. The second winding of each pair is connected in series to form the primary winding. The electrical connection shown in schematic form results. If a 4 to 1 ratio were desired with 8 turns on the primary, for example, 2 turns would be made of 4 pairs of twisted wires.

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