| 摘要 |
<p>The converter comprises an output transformer (T1) through which pass trapezoidal current waves and the primary winding (Ao) of which is supplied under the control of two control circuits (P1, P2) each comprising a transistor (Q1, 02) and a diode (D1, D2) which are connected in anti-parallel. The two transistors are controlled by two oppositely-poled secondary windings (W1, W2) of a second transformer (T2), the primary winding (W3) of which is controlled by the first transformer (T1). Associated with each control circuit (P1, P2) is a capacitor (C1, C2) such as to accumulate energy during one phase of operation and to discharge it during a subsequent phase. Another winding (Wc) of the second transformer (T2) permits the latter to be biased, stabilising the output voltages by means of closed-loop feedback control of one therof.</p> |
