A power supply circuit for providing a positive, intermediate, and negative voltage supply includes positive and negative DC voltage buses that connect to a power source; a first voltage divider that is connected between the positive and the negative DC voltage buses, that includes a first transistor connected to the negative DC voltage bus, and that provides the intermediate voltage supply; a second voltage divider that is connected between the positive and the negative DC voltage buses and that is connected to the first transistor; and a short circuit protection module that includes a second transistor connected between outputs of the first and second voltage dividers and connected to the first transistor and that includes a current limiting element connected to the first transistor and configured to limit power dissipated by the first transistor in the case of a short circuit to the intermediate voltage supply.

A three-level converting circuit, and a starting method and electronic equipment thereof. The circuit includes: a first voltage source; a first soft-start circuit; a first capacitor; a first switch, a second switch, a third switch and a fourth switch sequentially connected in series; a flying capacitor; a second soft-start circuit; a second voltage source and a second capacitor. The three-level converting circuit can pre-charge the flying capacitor, the first capacitor and the second capacitor when executing the starting method thereof, thereby preventing the over-voltage damage of the switches.

A three-level converting circuit, and a starting method and electronic equipment thereof. The circuit includes: a first voltage source; a first soft-start circuit; a first capacitor; a first switch, a second switch, a third switch and a fourth switch sequentially connected in series; a flying capacitor; a second soft-start circuit; a second voltage source and a second capacitor. The three-level converting circuit can pre-charge the flying capacitor, the first capacitor and the second capacitor when executing the starting method thereof, thereby preventing the over-voltage damage of the switches.

An arrangement, comprising a heat-emitting resistor, a control device for switching the resistor and a component that is at a potential without direct reference to a drive voltage. The resistor is arranged in spatial proximity to the component, and has a first and a second partial resistor connected in series. The control device includes at least one switching device for switching the heat-emitting resistor. The first partial resistor, the switching device and the second partial resistor are connected in series in the stated order and form a series connection. The first partial resistor and the component form a first partial capacitance and the second resistor and the component form a second partial capacitance. The partial capacitances are formed in such a way that upon the switching of the resistor a current flowing in the first partial capacitance is at least partly taken up by the second partial capacitance, or vice versa.

An arrangement, comprising a heat-emitting resistor, a control device for switching the resistor and a component that is at a potential without direct reference to a drive voltage. The resistor is arranged in spatial proximity to the component, and has a first and a second partial resistor connected in series. The control device includes at least one switching device for switching the heat-emitting resistor. The first partial resistor, the switching device and the second partial resistor are connected in series in the stated order and form a series connection. The first partial resistor and the component form a first partial capacitance and the second resistor and the component form a second partial capacitance. The partial capacitances are formed in such a way that upon the switching of the resistor a current flowing in the first partial capacitance is at least partly taken up by the second partial capacitance, or vice versa.

A three-level converting circuit, and a starting method and electronic equipment thereof. The circuit includes: a first voltage source; a first soft-start circuit; a first capacitor; a first switch, a second switch, a third switch and a fourth switch sequentially connected in series; a flying capacitor; a second soft-start circuit; a second voltage source and a second capacitor. The three-level converting circuit can pre-charge the flying capacitor, the first capacitor and the second capacitor when executing the starting method thereof, thereby preventing the over-voltage damage of the switches.

A three-level converting circuit, and a starting method and electronic equipment thereof. The circuit includes: a first voltage source; a first soft-start circuit; a first capacitor; a first switch, a second switch, a third switch and a fourth switch sequentially connected in series; a flying capacitor; a second soft-start circuit; a second voltage source and a second capacitor. The three-level converting circuit can pre-charge the flying capacitor, the first capacitor and the second capacitor when executing the starting method thereof, thereby preventing the over-voltage damage of the switches.

A Marx generator has at least two branches for providing a Marx voltage at an output pole. Each of the branches has a plurality of capacitor stages with voltage poles, cross branches with spark gaps, a last capacitor stage at its output end, and a first capacitor stage connected to an operating voltage. The branches have a common triggering section with a common first capacitor stage, a first adjacent cross branch, and an input pole. Each of the branches has the triggering section and also an individual portion with at least one capacitor stage that is only associated with the branch. A resonator arrangement contains the Marx generator and resonators at the respective output poles of the branches. A radiation arrangement has the resonator arrangement and a multi-feed waveguide with at least two of the resonators for respectively feeding an electromagnetic wave.

A Marx generator has at least two branches for providing a Marx voltage at an output pole. Each of the branches has a plurality of capacitor stages with voltage poles, cross branches with spark gaps, a last capacitor stage at its output end, and a first capacitor stage connected to an operating voltage. The branches have a common triggering section with a common first capacitor stage, a first adjacent cross branch, and an input pole. Each of the branches has the triggering section and also an individual portion with at least one capacitor stage that is only associated with the branch. A resonator arrangement contains the Marx generator and resonators at the respective output poles of the branches. A radiation arrangement has the resonator arrangement and a multi-feed waveguide with at least two of the resonators for respectively feeding an electromagnetic wave.

Certain aspects of the present disclosure generally relate to electronic circuits and, more particularly, to a power supply circuit and techniques for voltage regulation. One example method for voltage regulation is performed by a switched-mode power supply (SMPS). The method generally includes charging a first capacitive element during a first discharge phase of the SMPS having a first voltage rail and a second voltage rail, the first voltage rail being separate from the second voltage rail. Charging the first capacitive element may include directing a first current to flow from the second voltage rail to a reference potential node through the first capacitive element. In some aspects, the method also includes generating an output voltage at the output node during a first charge phase by directing a second current to flow from the first voltage rail to an inductive element of the SMPS through the first capacitive element.