| 摘要 |
An electrical circuit arrangement for the production of voltage pulse sequences, in particular for the operation of dielectrically impede discharges, has a charging circuit, with a charging capacitor (C2), fed with an input voltage (U?), a discharge and pulse circuit with a fast controllable switch, in particular with an IGBT (T1), which is connected to a clocked drive circuit (A), and a pulse transformer (TR1) with a load (L) connected thereto, and a feedback circuit with a feedback rectifier, for example semiconductor diodes (D3-D4) and a feedback energy accumulation circuit, for example a buffer capacitor (C1) connected in parallel with the input of the charging circuit. During each phase in which the IGBT is on, the electrical energy stored in the charging capacitor (C2) is transferred via the pulse transformer (TR1) to the load (L). The energy reflected from the load (L) and the pulse transformer (TR1) passes through the feedback diodes (D3-D5), is fed to the feedback point (R) and is received by the buffer capacitor (C1). During the reflection phases, the potential of the secondary winding is thereby clamped to the potential of the input voltage (U?). Furthermore, the energy fed back is in this way used as a contribution for the charging phases of the charging capacitor (C2).
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