Wideband audio output transformer with high frequency balanced w

Inductor devices – Winding formed of plural coils

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Details

336183, 336186, 336205, H01F 2728, H01F 2730

Patent

active

059173963

ABSTRACT:
A wideband audio output transformer for use with a push-pull vacuum tube amplifier using a multifilar ribbon in which primary windings and secondary windings coexist. The multifilar ribbon is wound continuously around a common core side by side to form successive layers. The primary windings are connected in series by turning the multifilar ribbon after the layers of multifilar ribbon have been wound and connecting the trailing end of the multifilar ribbon to the beginning end of the multifilar ribbon. Two additional wires are added in parallel with wires of the primary windings in the multifilar ribbon to redistribute the effective capacitance throughout the windings. The winding scheme eliminates the signal imbalance of an output transformer with a balanced push-pull primary winding and an unbalanced secondary winding at high frequencies. The winding scheme also increases the coupling between the first half primary, the second half primary and the secondary windings without compromising transformer performance at high frequencies. The secondary windings are connected in parallel to obtain the proper turns ratio for the transformer. The center tap of the balanced push-pull primary winding and one side of the unbalanced secondary winding is connected to AC ground.

REFERENCES:
patent: 1815620 (1931-07-01), Horn
patent: 2477074 (1949-07-01), McIntosh
patent: 2680218 (1954-06-01), Keroes
patent: 2791646 (1957-05-01), Keroes
patent: 3061804 (1962-10-01), Bereskin
patent: 3102245 (1963-08-01), Lawson, Jr.
patent: 3168715 (1965-02-01), Woodworth
patent: 3573648 (1971-04-01), Nestorovic
patent: 3895335 (1975-07-01), Manimalethu
patent: 3939449 (1976-02-01), Boyd et al.
patent: 4311977 (1982-01-01), Owen
patent: 4490844 (1984-12-01), Sohn
patent: 4631511 (1986-12-01), Sylvester, Jr. et al.
patent: 4755783 (1988-07-01), Fleischer et al.
patent: 4847984 (1989-07-01), Rossi et al.
patent: 5124681 (1992-06-01), Chen
patent: 5422599 (1995-06-01), Larsen
patent: 5500632 (1996-03-01), Halser, III
Is the Output Transformer Out? by Herbert Ravenswood.

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