Abstract: An embodiment of the present application discloses a driving method of a display device and a display device. The driving method includes driving steps: step S100: acquiring a first image information and a second image information; step S200: determining whether the current frame image belongs to a dynamic image; step S300: determining whether the current frame image is a heavy load image according to the image information of the current frame image in the dynamic image; and step S400: performing a grayscale energy-saving driving on a corresponding heavy load sub-pixel according to the image information of the heavy load image.

Abstract: The present disclosure relates to the field of directional solidification, and in particular, to an apparatus, method, and process for directional solidification by liquid metal spraying enhanced cooling (LMSC). The process has the following beneficial effects: the apparatus of the present disclosure can regulate a solidification structure of a casting, refine a dendrite spacing, and reduce or avoid metallurgical defects, and can be used to prepare high-quality large-sized columnar/single crystal blades or other castings.

Abstract: An embodiment of the present application discloses a driving method of a display device and a display device. The driving method includes driving steps: step S100: acquiring a first image information and a second image information; step S200: determining whether the current frame image belongs to a dynamic image; step S300: determining whether the current frame image is a heavy load image according to the image information of the current frame image in the dynamic image; and step S400: performing a grayscale energy-saving driving on a corresponding heavy load sub-pixel according to the image information of the heavy load image.

Abstract: The present disclosure relates to the field of directional solidification, and in particular, to an apparatus, method, and process for directional solidification by liquid metal spraying enhanced cooling (LMSC). The process has the following beneficial effects: the apparatus of the present disclosure can regulate a solidification structure of a casting, refine a dendrite spacing, and reduce or avoid metallurgical defects, and can be used to prepare high-quality large-sized columnar/single crystal blades or other castings.

Abstract: Provided are a fitness control system and a spinning bicycle. The system includes: a central controlling unit for detecting change information of each parameter of the fitness equipment; and a terminal device for controlling, according to the change information of each parameter of the fitness equipment, a virtual character to simulate movement of a user who uses the fitness equipment in the target fitness scene, and for real-time detecting during a virtual character simulates movement of the user, the road condition information in the target fitness scene, and feeding back to the central controlling unit a control signal matching a set condition. The central controlling unit is also configured to control, according to the control signal, the fitness equipment to generate feedback matching the influence.

Abstract: A variable valve driving mechanism of an engine includes a rocker arm configured to control open and close of a valve and a servo rocker arm arranged in parallel to the rocker arm. A swing end of the servo rocker arm extends to the top of the swing end of the rocker arm. A valve adjustment gap provided in the swing direction of the servo rocker arm and the rocker arm is formed between the servo rocker arm and the rocker arm. A gap compensating device telescopically filling the valve adjustment gap and configured to adjust the valve to be delayed to close or open in advance when extending to the valve adjustment gap is provided between the servo rocker arm and the rocker arm.

Abstract: A power supply circuit and a photovoltaic power generation system comprising same. The power supply circuit utilizes the condition that a voltage output by discharge of a capacitor is a direct-current voltage which decreases with time, a CCFL conversion circuit is connected behind the capacitor, the CCFL conversion circuit converts the input direct-current voltage which decreases which time into a sinusoidal alternating-current for output. Since the CCFL conversion circuit operates in an open-loop mode, a peak-to-peak value of the sinusoidal alternating-current output by the CCFL conversion circuit is in direct proportion to an operating voltage of the CCFL conversion circuit, the voltage decreases with time, that is, the peak-to-peak valve of the sinusoidal alternating-current output by the CCFL conversion circuit decreases with time, thus, an effective value of the sinusoidal alternating-current decreases with time, and an attenuated sinusoidal alternating-current voltage is obtained.

Abstract: A variable valve driving mechanism of an engine, and the engine. The variable valve driving mechanism comprises a rocker arm (1) configured to control open and close of a valve (7) and a servo rocker arm (2) arranged in parallel to the rocker arm (1). A swing end of the servo rocker arm (2) extends to the top of the swing end of the rocker arm (1). A valve adjustment gap (1-2) provided in the swing direction of the servo rocker arm (2) and the rocker arm (1) is formed between the servo rocker arm (2) and the rocker arm (1). A gap compensating device telescopically filling the valve adjustment gap (1-2) and configured to adjust the valve (7) to be delayed to close or open in advance when extending to the valve adjustment gap (1-2) is provided between the servo rocker arm (2) and the rocker arm (1).

Abstract: A power supply circuit and a photovoltaic power generation system comprising same. The power supply circuit utilizes the condition that a voltage output by discharge of a capacitor is a direct-current voltage which decreases with time, a CCFL conversion circuit is connected behind the capacitor, the CCFL conversion circuit converts the input direct-current voltage which decreases which time into a sinusoidal alternating-current for output. Since the CCFL conversion circuit operates in an open-loop mode, a peak-to-peak value of the sinusoidal alternating-current output by the CCFL conversion circuit is in direct proportion to an operating voltage of the CCFL conversion circuit, the voltage decreases with time, that is, the peak-to-peak valve of the sinusoidal alternating-current output by the CCFL conversion circuit decreases with time, thus, an effective value of the sinusoidal alternating-current decreases with time, and an attenuated sinusoidal alternating-current voltage is obtained.

Abstract: An indicating circuit for a switching power supply is provided. An LED and a resistor are connected in series, and then are connected in parallel with a capacitor, and the parallel-connected circuit and a diode are connected in series in the same direction, and then are connected in parallel with an inductor to form the indicating circuit. The cathode of the indicating circuit is a terminal 1, and the anode of the indicating circuit is a terminal 2.

Abstract: Provided is a ripple current generating circuit, which comprises an indicating circuit based on an existing ripple current generating circuit. The indicating circuit comprises a resistor, a capacitor, a diode, and a light-emitting diode (LED). The indicating circuit is formed by connecting the LED and the diode that are reversely connected in parallel first to the resistor in parallel and then to the capacitor in series. The capacitor is low in capacity and serves to block direct current while allowing high frequency to pass. With increasing ESR of a tested capacitor, a high-frequency ripple voltage generated by a high-frequency exciting current across the ESR may rise accordingly. Since the capacitor is capable of allowing high frequency to pass, the LED will emit light when the high-frequency ripple voltage reaches a particular threshold that can be adjusted by adjusting the resistance of the resistor.

Abstract: A flyback switch power supply connects NP1 heteronymous terminals in a transformer B to a power source, grounds second primary side winding NP2 heteronymous ends, and ensures that NP1 and NP2 are dual-wire parallel windings. Adding a capacitor C1, one end of C1 is connected to NP1 homonymous terminals, and the other end is connected to NP2 homonymous terminals. The secondary side winding uses a Q2 connection method that is the opposite to the prior art, and is controlled by a PWM signal controlled by another output voltage. The following effect is realized: when Q1 is connected, NP1 and NP2 are both excited, and there is artificial surplus energy; when Q1 is disconnected, the secondary side NS implements a rectified output voltage via Q2 on the basis of the output load requirements, and the leakage inductance and excess energy are non-destructively absorbed by NP2 via D1.

Abstract: A flyback switch power supply connects NP1 heteronymous terminals in a transformer B to a power source, grounds second primary side winding NP2 heteronymous ends, and ensures that NP1 and NP2 are dual-wire parallel windings. Adding a capacitor C1, one end of C1 is connected to NP1 homonymous terminals, and the other end is connected to NP2 homonymous terminals. The secondary side winding uses a Q2 connection method that is the opposite to the prior art, and is controlled by a PWM signal controlled by another output voltage. The following effect is realized: when Q1 is connected, NP1 and NP2 are both excited, and there is artificial surplus energy; when Q1 is disconnected, the secondary side NS implements a rectified output voltage via Q2 on the basis of the output load requirements, and the leakage inductance and excess energy are non-destructively absorbed by NP2 via D1.

Abstract: A direct filtering type switching power supply is provided, for an occasion including pulsating direct current, including a filter circuit, a main power stage and an indicating circuit. A direct current input is connected to the filter circuit through the indicating circuit. The filter circuit and the main power stage are connected in parallel. The indicating circuit is formed by connecting a light emitting unit with an inductor in parallel, and make sure that the direction of the direct current input passing through the inductor is opposite to the conducting direction of the light emitting unit. The filter circuit at least includes an electrolytic capacitor. When the electrolytic capacitor is normal, an excitation current of a switching transistor in the main power stage basically does not appear in the inductor, and an LED in the light emitting unit does not emit light.

Abstract: A switch power supply having active power factor correction is provided, including a power factor correction (PFC) circuit, a filter circuit, a main power stage, a first capacitor and an indicating circuit. The indicating circuit consists of a light emitting diode (LED) and an inductor; and the current direction of power supplied from the PFC circuit to the main power stage through the inductor is opposite to the conduction direction of the LED. The filter circuit at least comprises an electrolytic capacitor. When the electrolytic capacitor is normal, the LED does not emit light. When the equivalent series resistance (ESR) of the electrolytic capacitor sharply rises, the exciting current appears in the inductor. When a power transistor in the main power stage is switched off, the exciting current passes through the LED for freewheeling and enables the LED to emit light.

Abstract: Provided is a ripple current generating circuit, which comprises an indicating circuit based on an existing ripple current generating circuit. The indicating circuit comprises a resistor, a capacitor, a diode, and a light-emitting diode (LED). The indicating circuit is formed by connecting the LED and the diode that are reversely connected in parallel first to the resistor in parallel and then to the capacitor in series. The capacitor is low in capacity and serves to block direct current while allowing high frequency to pass. With increasing ESR of a tested capacitor, a high-frequency ripple voltage generated by a high-frequency exciting current across the ESR may rise accordingly. Since the capacitor is capable of allowing high frequency to pass, the LED will emit light when the high-frequency ripple voltage reaches a particular threshold that can be adjusted by adjusting the resistance of the resistor.