12 results about "Regenerative circuit" patented technology

A generator with a regeneration device. The electrosurgical generator according to the invention includes an oscillating circuit excited by means of an excitation circuit having a frequency preferably close to its resonant frequency, wherein the oscillation should be periodically interrupted. This can be done, for example, in situations where a pulse-pause modulation of a radio frequency voltage must be created, the fundamental frequency of which, for example, 350 kHz or 500 kHz, can be modulated with a modulation frequency of, for example, 50 kHz. To stop the oscillation in the generator's oscillating circuit as abruptly as possible without losing the energy stored in the oscillating circuit, a regeneration circuit is provided, implemented by means of a voltage multiplier circuit. Compared to a boost converter coupled inductor, it has the advantage of providing a low capacitive load to the oscillating circuit, especially because it is only electrically effectively connected to the oscillating circuit via a switch during the regeneration phase. This concept allows for efficient energy regeneration and therefore allows for precise amplitude modulation of the radio frequency voltage, particularly square wave modulation (on-off-switch).

To provide a robot that is able to properly consume regenerative power of a motor while improving back drivability.SOLUTION: A robot 1, which includes at least one joint 4, a motor 7 that operates the joint 4, and a power supply 5 that supplies electric power for driving the motor 7, has regenerative circuits 8, 9 that receive and consume regenerative electric power generated when the motor 7 is operated by the external force. The regenerative circuits 8, 9 are configured to be switched between at least two states that are a first regeneration state and a second regeneration state different from each other in an amount of power consumption. The robot further includes: detection means 11, 12 configured to detect a voltage of the power supply 5; and regeneration state switching means configured to set the regenerative circuits 8, 9 to the first regeneration state when the detected voltage of the power supply 5 is a first predetermined value, and to set the regenerative circuits to a second regeneration state when the detected voltage of the power supply 5 is a second predetermined value larger than the first predetermined value.SELECTED DRAWING: Figure 2

A burst-mode laser driver includes a driver circuit, a switching circuit, and an energy recycling or harvesting circuit. The driver circuit is adapted to be electrically coupled to a burst-mode laser, the driver circuit configured to control a bias current supplied to the burst-mode laser to change the laser between the burst-on and the burst-off state. The switching circuit is electrically coupled to the driver circuit and adapted to switch the bias current between the laser during a burst-on state and a dummy electrical path during a burst-off state. The energy recycling circuit electrically coupled to the switching circuit and is adapted to harvest at least a portion of energy from the bias current during the burst-off state.

This invention provides an air conditioning circuit and a vehicle, relating to the field of automotive air conditioning circuits. The air conditioning circuit includes a main circuit and a regenerative circuit connected to each other. The main circuit is equipped with a first heat exchanger and a second heat exchanger, and is connected to the passenger compartment and the surrounding environment. The air conditioning circuit includes multiple four-way valves; by changing the connection mode of these four-way valves, the air conditioning circuit can be configured as a cooling circuit or a heating circuit to meet the needs of the passenger compartment for cooling in summer and heating in winter. Furthermore, this air conditioning circuit incorporates a regenerative circuit and can utilize the circulating air from the passenger compartment, thereby reducing compressor power consumption and increasing cooling or heating capacity. This effectively improves the coefficient of performance (COP) under high-temperature conditions in summer and the COP under low-temperature conditions in winter, thus reducing the energy consumption of the air conditioning circuit and improving the overall vehicle economy.

To provide a regeneration circuit which increases a speed of a sampler and increases sensitivity of the sampler, and a method.SOLUTION: A regeneration circuit 150 includes a first transistor 250 coupled to an input 272 of a second inverting circuit 270, and a second transistor 255 coupled to an input 262 of a first inverting circuit 260, a third transistor 610 and a fourth transistor 620. A gate of the first transistor and a gate of the third transistor are coupled to a first input 160, and a gate of the second transistor and a gate of the fourth transistor are coupled to a second input 165. The regeneration circuit further includes a third switch 630 and a fourth switch 645. The third switch and the third transistor are coupled in series between a rail 280 and the second transistor, and the fourth switch and the fourth transistor are coupled in series between the rail and the second transistor.SELECTED DRAWING: Figure 6

An electric power conversion apparatus includes a first electric power terminal, a switching circuit, a transformer, a rectifying circuit, a smoothing circuit, an electric power regeneration circuit, a control circuit, and a second electric power terminal. The electric power regeneration circuit includes a diode circuit, a second capacitor, first and second regeneration switching devices, a second inductor, and a first diode. The control circuit is configured to, when a voltage at a first node increases and exceeds a threshold voltage, cause the first regeneration switching device to be on and cause the second regeneration switching device to be off. A first positive voltage and a first negative voltage are to alternately occur across a second winding. The threshold voltage is higher than each of a voltage corresponding to an average value of the first positive voltage and a voltage corresponding to an average value of the first negative voltage.

To provide a vibration sample type magnetometer capable of adopting a superconductive electromagnet as an exciting electromagnet, reducing power consumption more than before, and performing highly efficient operation.SOLUTION: In the vibrating sample magnetometer 1, the exciting electromagnet 102 is a superconducting electromagnet, and when the current supplied to the exciting electromagnet 102 is reduced, the magnetic energy of the exciting electromagnet 102 is returned to the battery 106 as a current by the regeneration circuit 110 disposed separately from the control circuit AMP, and the current flowing through the exciting electromagnet 102 is returned to the battery 106 by the control circuit AMP.SELECTED DRAWING: Figure 3

An electric power conversion apparatus includes: first and second electric power terminals; a switching circuit; a transformer; a rectifying circuit; a smoothing circuit including a first inductor and a first capacitor; an electric power regeneration circuit; and a control circuit. The electric power regeneration circuit includes: a first diode including an anode coupled to the rectifying circuit, and a cathode coupled to a first node; a second capacitor having one end coupled to the first node and another end coupled to a reference node; a first regeneration switching device having one end coupled to the first node and another end coupled to a second node; a second regeneration switching device having one end coupled to the second node and another end coupled to the reference node; and a second inductor and a second diode provided on a path coupling the second node and the one end of the first capacitor.

To obtain a power conversion device capable of protecting a circuit in the event of a short circuit.SOLUTION: A power conversion device according to one embodiment of the present disclosure comprises a first power terminal having a first connection terminal and a second connection terminal, a switching circuit, a transformer, a rectifier circuit having one or a plurality of rectifier switching elements, a smoothing circuit including a first inductor and a first capacitor, a power regeneration circuit connected to the rectifier circuit, capable of regenerating power to the first capacitor, a control circuit capable of controlling the operation of the switching circuit, rectifier circuit, and power regeneration circuit, and a second power terminal. The control circuit is capable of detecting a short circuit between the first connection terminal and the second connection terminal at the first power terminal based on one or both of the voltage and current in the power regeneration circuit during a predetermined period before the period of supplying power from the first power terminal to the second power terminal.SELECTED DRAWING: Figure 2

To obtain a power conversion device capable of protecting a circuit in the event of sudden changes in an input voltage.SOLUTION: A power conversion device according to one embodiment of the present disclosure comprises a first power terminal, a switching circuit, a transformer, a rectifier circuit, a smoothing circuit, a power regeneration circuit, a control circuit, and a second power terminal. The power regeneration circuit comprises a diode circuit, a second capacitor, first and second regeneration switching elements, a second inductor, and a first diode. The control circuit is capable of turning on the first regenerative switching element and turning off the second regenerative switching element when the voltage at the first node rises and exceeds the threshold voltage. Between the two ends of the second winding, the first positive voltage and the first negative voltage occur alternately, and the threshold voltage is higher than the voltage corresponding to the average value of the first positive voltage and the voltage corresponding to the average value of the first negative voltage.SELECTED DRAWING: Figure 2

To obtain a power conversion device capable of avoiding avalanche breakdown.SOLUTION: A power conversion device according to one embodiment of the present disclosure comprises a first power terminal, a switching circuit, a transformer, a rectifier circuit, a smoothing circuit including a first inductor and a first capacitor, a power regeneration circuit, a control circuit, and a second power terminal. The power regeneration circuit has a first diode having an anode connected to the rectifier circuit and a cathode connected to a first node, a second capacitor having one end connected to the first node and the other end connected to a reference node, a first regeneration switching element having one end connected to the first node and the other end connected to the second node, a second regeneration switching element having one end connected to the second node and the other end connected to the reference node, and a second inductor and second diode provided in the path connecting the second node and one end of the first capacitor.SELECTED DRAWING: Figure 2

An integrated circuit includes an upper threshold circuit configured to set a logic level of a first enabling signal, a lower threshold circuit configured to set a logic level of a second enabling signal, and a control circuit configured to change an output voltage signal in response to a condition that the logic level of the first enabling signal and the logic level of the second enabling signal are changed consecutively. In the control circuit, a first switch is electrically connected to a second switch at a buffer output node. The control circuit includes a regenerative circuit configured to maintain the output voltage signal at the buffer output node while each of the first switch and the second switch is at a disconnected state.