Reducing the Weight and Cost of a Conventional Power Transformer

Vanderkooy J. Reducing the Weight and Cost of a Conventional Power Transformer. In: AES Convention 78. Audio Engineering Society; 1985. Paper 2262. Available from: https://aes.org/publications/elibrary-page/?id=11493

@inproceedings{Vanderkooy1985_11493,
  author = {Vanderkooy, John},
  title = {{Reducing the Weight and Cost of a Conventional Power Transformer}},
  booktitle = {AES Convention 78},
  note = {Paper 2262},
  year = {1985},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=11493}
}

TY  - CPAPER
TI  - Reducing the Weight and Cost of a Conventional Power Transformer
AU  - Vanderkooy, John
T2  - AES Convention 78
M1  - Paper 2262
PY  - 1985
DA  - 1985/05/06
UR  - https://aes.org/publications/elibrary-page/?id=11493
PB  - Audio Engineering Society
LA  - en
AB  - Power transformers in DC power supplies with capacitor input filters are poorly utilized due to the low duty cycle of the current pulses. By switching the primary voltage on during periods of current flow, there is much less flux change in the core, and the transformer can be redesigned to have less weight and cost. The problem is analyzed and several schemes are evaluated. A simple triac switch allows about a factor of two increase in transformer efficiency, while a more complex switch can potentially reduce the weight by even a larger factor.
ER  -