3 results about "Bipolar circuits" patented technology

A bipolar electrical circuit comprising: - a first terminal (B1, B3) and a second terminal (B2, B4) for electrical connection, designed to receive a potential difference according to a predefined polarity (V) for supplying current to the bipolar electrical circuit, - an electrical warning device (1), coupled to the first (B1, B3) and second (B2, B4) terminals, and configured to operate under a reversed polarity (Vinv) with respect to the predefined polarity (V) when it is supplied with current, the electrical circuit comprising a one-way current switch (3) interposed between one of the terminals and the electrical warning device (1), this switch (3) being oriented in the forward direction of current only for the reversed polarity (Vinv). Figure 1.

The application relates to a high-voltage, high-frequency and pulse waveform adjustable high-voltage partial discharge test source, belonging to the technical field of high-voltage electrical equipment partial discharge test. The application comprises a direct current power supply, a direct current power supply internal resistance, a total switch and n-stage unit circuits; each stage unit circuit is composed of an energy storage capacitor, three solid-state switches and two diodes. Through switch timing control, the circuit can sequentially complete charging, positive polarity discharge, positive polarity truncation, negative polarity discharge and negative polarity truncation, and output a bipolar square wave pulse. Compared with a traditional bipolar Marx circuit, the application reduces half of the devices, has a simple structure, low loss and simple control; diode isolation is adopted to realize fast equalization charging of the capacitors of all stages, the charging current is large, and voltage consistency is good; the application has a steep rising edge, fast truncation and no tailing; the pulse amplitude, pulse width, frequency and polarity can be flexibly adjusted.

The application discloses a high-fidelity power pulse sound source for ship noise simulation and a control method thereof, and contains an electromagnetic transducer and a driving circuit thereof, the electromagnetic transducer driving circuit includes elements for actively controlling the charging current of an energy storage capacitor, and a bipolar Marx circuit for generating a bipolar power pulse, the working mode includes a bipolar pulse output mode and a power amplifier output mode, and a circuit control method required for simulating ship noise. The application adopts the above-mentioned high-fidelity power pulse sound source for ship noise simulation and the control method thereof, realizes accurate injection and extraction of the current in the electromagnetic transducer coil, and further accurately controls the transducer output sound wave, the two working modes of bipolar pulse output and power amplifier output simulate the continuous spectrum and line spectrum in the ship noise respectively, and finally, a neural network for generating a pulse power trigger signal is trained based on a cycle gating unit, and high-fidelity ship noise simulation is realized.