| 摘要 |
<p>The invention relates to a power source with an arrangement for restricting a short-circuit current. The power source comprises at least a primary-side switch block (A), transformer unit (B) and a rectifier (C). The arrangement for restricting a short-circuit current is realized such that the operation of the rectifier (C) depends on a control from a pulse-forming part of the primary-side switch block (A) in such a manner that the control for at least one switching transistor (Q3, Q4) synchronized with a rectifier (C) control unit (8) is interrupted when the output current (Iout) of the rectifier (C) exceeds a certain limit value. In parallel with at least one switching transistor (Q3, Q4) in the rectifier (C) there is advantageously at least one other switch element to realize the secondary-side rectification in an overload situation.</p> |
