| 摘要 |
The circuit includes at least one main switching device (T1), and a freewheeling diode (D1) connected in antiparallel with the direction of main current flow in each main switching device. An auxiliary switching device (T11) is provided for each main switching device, the collectors (C) of which are connected to the base of the respective main switching devices, and the emitters (E) of which are connected to the emitters of the respective main switching devices. At least one capacitor (C11) is arranged between the base of the auxiliary switching device and the collector of the respective main switching device. A discharging unit (D11) is arranged between the base and the emitter of the auxiliary switching device, so that the capacitors can be discharged during the transition of the main switching device from off to on. Independent claims are included for a bridge circuit and a free-running oscillator circuit for driving a load. |
