公开(公告)号：EP1864373A2

公开(公告)日：2007-12-12

申请号：EP06739999.8

申请日：2006-03-30

Applicant: Thermatool Corp.

Inventor： LEE, Thomas, G.

IPC: H02M9/02 ,  H02M5/10 ,  H02M7/523 ,  H02M3/335

CPC classification number: H03K17/168 ,  H02M3/155 ,  H03K17/162 ,  H03K2217/0036

Abstract: A solid state switching circuit utilizes a transformer in series with the circuit's switching device by which energy initially stored in the primary of the transformer is recovered in resonant circuitry connected to the secondary of the transformer for transfer of the energy to the load when the switching device is not conducting.