56results about How to "Avoid voltage spikes" patented technology

The invention relates to a filter element comprising a filter medium (10) extending between two end caps (12, 14) that are respectively connected to an associable end region (16, 18) of the filter medium (10), supported at least on one side on a supporting tube (20). The fact that at least one of the end caps (14) and / or at least one end region (16, 18) of the filter medium (10) comprises a contacting device (22) and / or the respective end cap (14) itself or parts thereof are embodied in such a way as to derive the electrostatic charges especially occurring during the operation of the filter element, ensures that the charge generated on the filter medium (Meshpack) by tribo-electrical effects can escape towards a mass point or a mass site via the contacting device (22) or the respective end cap (14).

The present embodiments improve the radiation monochromy of an x-ray device with a control electrode for controlling a flow of electrons generated between a cathode and an anode. A correction voltage is generated in accordance with a correction function. This correction voltage is used for correction of a voltage applied between the anode and the cathode in terms of a constant voltage, even in the period of control using the control electrode. The voltage applied between the anode and the cathode is corrected with the generated correction voltage.

Provided are a motor vehicle power supply, an associated operating method and a means for its implementation. The vehicle power supply includes: an active bridge rectifier which is connected to a generator via multiple phase terminals, and having terminals on the direct voltage side; a unit for recognizing load shedding at the active bridge rectifier and short-circuiting the phase terminals in a clocked manner, as the result of which a pulsed current is fed to the vehicle electrical system; a vehicle power supply capacitor configured for smoothing the pulsed current; and a voltage limiting unit configured for clipping a voltage between the terminals of the bridge rectifier on the direct voltage side to a predefined maximum voltage. The corresponding operating method and the means for its implementation are also subjects of the invention.

A system and method for controlling switching in an AC-AC converter is disclosed. A controller for the AC-AC converter determines a direction of current flow on supply lines that provide AC power to the AC-AC converter and determines a switching pattern for each of a plurality of line-side switches and each of a plurality of floating-neutral side switches in the AC-AC converter based on the determined direction of current flow on each of the supply lines. The controller causes the line-side switches and the floating-neutral side switches to operate in an ON or OFF condition according to the determined switching pattern, such that a controlled current flow is output from the AC-AC converter. The controller also implements a safe-switching routine when transitioning from a first switching pattern to a second switching pattern that prevents a non-zero current from being interrupted during the transitioning between the first and second switching patterns.

A high-efficiency and low-cost forward and flyback DC-DC converter topology. The topology of the forward and flyback DC-DC converter includes a transformer, a main switch tube, a clamping circuit, a first and a second rectifier switch tube, an LC resonance circuit and an output capacitor. The primary winding of the transformer is connected in series with the main switch tube in the first and second rectifier switches. Between the second input terminal and the second input terminal, a clamping circuit composed of a clamping capacitor and a clamping switch tube connected in series is connected in parallel with the primary winding or the main switching tube, and the secondary winding of the transformer includes a forward winding and a flyback winding, so that The end of the current flowing into the primary winding is the same-named end of the primary winding. The connection of the secondary side of the transformer is as follows: the same-named end of the forward winding is connected to the first output terminal through the first rectifier switch tube, and the same-named end of the flyback winding is connected to the first output terminal through the first rectifier switch. The two rectifier switches are connected to the second output terminal, and the LC resonant circuit is connected to the first and second output terminals and the opposite ends of the forward and flyback windings so that the first and second rectifier switches can realize zero-current switching, and the output A capacitor is connected between the first and second output terminals.

The invention discloses an isolated high-light load efficiency low-output voltage high-current switch power source which comprises an active clamping primary switching circuit (1), an insulating transformer (2), a synchronous rectification circuit (3), an output filter circuit (5), an output sample circuit (6), an error magnification isolation circuit (7), a pulse width modulation control circuit(10), an auxiliary follow current pipe (4), a load sensing circuit (8) and an isolation driver circuit (9). The invention greatly lowers the light load power consumption of the switching converter, and has the advantages of simple structure, low cost and high reliability.