8 results about "Bipolar circuits" patented technology

The invention discloses a high-fidelity power pulse sound source for ship noise simulation and a control method thereof, the high-fidelity power pulse sound source comprises an electromagnetic transducer and a driving circuit thereof, the driving circuit of the electromagnetic transducer comprises an element for actively controlling the charging current of an energy storage capacitor and a bipolar Marx circuit for generating bipolar power pulses, the working modes comprise a bipolar pulse output mode and a power amplifier output mode. The invention also provides a circuit control method required by ship noise simulation. According to the high-fidelity power pulse sound source for ship noise simulation and the control method of the high-fidelity power pulse sound source, accurate injection and extraction of current in an electromagnetic transducer coil are achieved, and then the transducer is accurately controlled to output sound waves; the two working modes of bipolar pulse output and power amplifier output simulate a continuous spectrum and a line spectrum in ship noise respectively, and finally, a neural network used for generating a pulse power supply trigger signal is trained based on a cyclic gating unit, so that high-fidelity ship noise simulation is realized.

The invention discloses a dielectric isolation method in preparation of a bipolar circuit chip. The dielectric isolation method is characterized by comprising the following steps: S1, preparing a wafer; s2, forming a first oxide layer on the wafer silicon wafer; s3, preparing a first tank body; s4, etching the first groove body downwards in advance; s5, preparing a second tank body; s6, preparing a second oxide layer; s7, depositing a polycrystalline silicon layer on the second oxide layer; and 8, polishing the upper surface of the second oxide layer to flatten the surface of the second oxide layer. The method is simple and clear in step and convenient to implement, the leakage current and transconductance are not greatly degraded while the breakdown voltage is optimized and guaranteed to be improved, and the defect of transverse diffusion of the PN isolation junction under the large line width process condition is overcome.

The invention discloses a bipolar cutting blood coagulation surgical instrument and belongs to the field of medical instruments. The instrument comprises an upper shear blade, an upper electrocoagulation forceps piece, a lower shear blade, a lower electrocoagulation forceps piece and a fixing clamping piece which are integrally formed, only a cutting edge and a blood coagulation occlusal surface are conductive through an insulation structure design, and the rest parts are covered with an insulation coating. When in use, the bipolar loop reduces tissue damage, the operation time is shortened by synchronously cutting blood coagulation, and the risks of blood vessel electric damage, eschar and thrombus formation are avoided. The instrument can be sterilized at high temperature and high pressure, can be reused, and is economical and environment-friendly.

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 utility model discloses a medical electrode tool bit, and belongs to the technical field of medical instruments. A medical electrode tool bit comprises a single-pole plug, a double-pole plug, a handle assembly, a liquid injection tube and an electrode assembly. The handle assembly is provided with a rotating wheel capable of rotating by 360 degrees, a monopole circuit, a bipolar circuit, a monopole cutting button for controlling the on-off of the monopole circuit, a bipolar electrocoagulation button for controlling the on-off of the bipolar circuit and a push-pull piece; the electrode assembly comprises a unipolar cutting electrode, two bipolar electrocoagulation hemostasis electrodes, an insulator and an outer tube; one end of the liquid injection pipe is communicated with an external liquid supply device, and the other end is hermetically connected with a water inlet cavity in the handle assembly; the electrode cutter head is provided with a single-pole cutting function module and a double-pole electric coagulation hemostasis function module, so that different functions can be switched at any time in the operation process, and the operation is convenient and fast. The electrode assembly can rotate by 360 degrees through the rotating wheel, the monopole cutting electrode can be flexibly stretched out and drawn back through the push-and-pull piece, and medical staff can conveniently adjust the monopole cutting electrode in real time in an operation.

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.

The present invention relates to the technical field of medical devices, and in particular to a monopolar and bipolar conversion system and a surgical instrument, which is used to connect a first forceps head and a second forceps head of the surgical instrument, and the first forceps head and the second forceps head are insulated and include: a plate for being attached to a human body; a first connection end, the first connection end being connected to the first forceps head; a second connection end, the second connection end being connected to the second forceps head; a bipolar circuit, connected to a first power supply, with the first connection end being connected to the positive pole of the first power supply and the second connection end being connected to the negative pole of the first power supply; a monopolar circuit, connected to a second power supply, with the first connection end being connected to the positive pole of the second power supply and the plate being connected to the negative pole of the second power supply; a circuit switching device, the circuit switching device realizes the conduction switching between a bipolar circuit and a monopolar circuit. The surgical instrument of this patent not only has all the monopolar functions of other instruments but also has bipolar functions, and has a wide range of applications.