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.

Author: Vanderkooy, John
Affiliation: University of Waterloo, Department of Physics, Waterloo, Ontario, Canada
AES Convention: 78 (May 1985) Paper Number: 2262
Publication Date: May 1, 1985
Subject: Measurement and Instrumentation

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.