59results about How to "Reduce no-load power consumption" patented technology

The invention discloses a double triode current control self oscillation flyback converter which comprises a soft start part, a MOS tube TR1, a transformer T1, a pulse frequency modulating part, a benchmark amplifying part, an insulating optical coupler OC1 and a voltage regulation output loop part; an input electric quantity is connected with the output loop part by the transformer T1; wherein, the pulse frequency modulating part mainly comprises a triode TR2, a resistance R2, a capacitance C2 and a resistance R4; the base electrode of the triode TR2 is connected with the source electrode of the MOS tube TR1 by an bias resistance R3 and a capacitance C2 which are connected in parallel; the source electrode of the MOS tube TR1 is grounded by the resistance R4; the pulse frequency modulating part is additionally provided with an triode current control circuit; the triode current control circuit is connected between the MOS tube TR1 and the triode TR2 to realize the self oscillation output of the double triode current control at the input end. The converter of the invention has the advantages of high working efficiency and working with no load, which can ensure the output voltage to be stable, the powers for no load work and short circuit to be very low and realizes continuous short circuit protection and fast dynamic response.

The invention provides a multi-mode control method of an active clamp fly-back converter. In the fly-back converter, a controller realizes mode switching among a lagging edge non-complementary mode, aleading edge non-complementary mode and a leading edge non-complementary Burst mode of two driving signals after detecting a feedback voltage and comparing the feedback voltage with a set mode switching threshold voltage. According to the invention, the lagging edge non-complementary mode is adopted to reduce the circulating current of the converter, the leading edge non-complementary mode is adopted instead of a common fly-back mode to improve the light-load efficiency, and the leading edge non-complementary burst mode is adopted under the condition of no load in order to limit the magnitudeof the primary peak current in the burst mode, avoid audio noise and achieve low no-load power consumption.

The invention discloses a regulation method and device. The regulation method includes: acquiring M current performance data from M servers in a cabinet, wherein each current performance datum in the M current performance data at least includes current utilization information in main controller performance data of the main controller of the M servers, and M is an integer greater than or equal to 1; determining at least one adjustment parameter used for adjusting air supply equipment according to the M current performance data; according to the at least one adjustment parameter, controlling current air supplying mode of the air supply equipment so as to enable the current air supplying mode to be matched with M current utilization of the M main controllers.

The invention particularly relates to a control circuit and a control method of a flyback active clamp and an asymmetrical half-bridge switching converter. As far as the circuit solution is concerned, the present invention provides a flyback control circuit, including an integrated control circuit for controlling the switch tube and the clamp tube, and the integrated control circuit includes a drive unit for the switch tube, a drive unit for the clamp tube, and an off-hold drive When the unit is light-loaded or no-loaded, the sum of the turn-on time of the switch tube, the turn-on time of the clamp tube and the dead time between them forms a single cycle, and the duration of the single cycle is a fixed value. The turn-on time of the switch tube It has a complementary relationship with the turn-on time of the clamp tube in a single cycle; the time of a single cycle and the time of keeping it off constitute the total working cycle. Compared with the prior art, the present invention improves light-load efficiency and reduces no-load power consumption under the condition of ensuring the efficiency and EMI advantages of traditional circuits under light-load and above loads.

The invention relates to the field of switching converters, in particular to a control circuit and a control method of a flyback active clamp switching converter. The invention provides an active clamping flyback circuit capable of realizing frequency reduction and ZVS. The flyback circuit includes a main power loop, a clamping loop, and an output rectifying and filtering loop. The main power circuit is formed by connecting a transformer and a main switching tube, the clamping circuit is formed by connecting a clamping switch tube, a clamping capacitor and a clamping diode, and the output rectifying and filtering module is composed of an output rectifying diode connected to the output capacitor. Compared with the prior art, the present invention can achieve frequency reduction under light load, and the control scheme is flexible; and the loss of the transformer winding and the internal resistance of the switch tube caused by the switching loss and the effective value of the current under no-load are very small, which greatly improves the Reduced no-load power consumption and improved light-load efficiency.

Present invention discloses TV set standby control circuit. It contains electronic switch and on-off control circuit, wherein said on-off control circuit connected with decode chip of TV set CPU, in receiving remote controller infrared signal to make electronic switch conduction a period of time, in this period of time, CPU decode chip identifying whether the next received infrared signal being right switching on signal, if it is not then the on-off control circuit controlling electronic switch being off. Present invention also discloses TV set having said standby control circuit. Present invention realizes micro - power consumption standby (only 500 mW), and can prevent effectively TV set TV set incorrect operation resulted by interference signal.

The invention belongs to the field of electric welding and particularly relates to an arc striking pulse peak current control electric welding machine and a control method thereof. The electric welding machine applies a low-frequency low-duty-ratio pulse current during short circuit, and an arc striking pulse peak current of the low-frequency low-duty-ratio pulse current ranges from a 30A welding current to a triplex welding current. Therefore, the arc striking pulse peak current can be higher than the welding current during the low welding current, and arc striking is facilitated; and the arc striking pulse peak current can be lower than the welding current during the high welding current, a short-circuit limit output circuit is cut off after arc striking in welding is successful, the welding current slowly rises from the minimum current to the welding current, and the striking current can be reduced by the means.

The invention discloses a split scraper assembly and conveying equipment. The split scraper assembly includes: an upper scraper body, a lower scraper body, and a connection connecting the upper scraper body and the lower scraper body parts; wherein, the upper end located in front of the head of the upper scraper body is a hollow structure; the lower end located in front of the head of the lower scraper body is a hollow structure. Therefore, the split scraper assembly and conveying equipment of the present invention can reduce no-load energy consumption and improve production efficiency.

The invention relates to a biconical high consistency refiner which comprises a machine frame, a main shaft, a refining chamber base, the middle portion of a refining chamber, and a refining chamber cover, wherein a bearing seat is horizontally and fixedly installed on the machine frame, the refining chamber cover, the middle portion of the refining chamber, and the refining chamber base are formed coaxially, the closed refining chamber is defined by the refining chamber cover, the middle portion of the refining chamber, and the refining chamber base, a biconical stator is fixedly installed on the main shaft arranged inside the middle portion of the refining chamber coaxially, a biconical rotor is installed in an inner gap of the biconical stator, and three refiner areas, namely two conical refiner areas arranged in a mirror symmetry mode and a cylindrical refiner area connected in the middle, are formed by the biconical rotor and the biconical stator. The refining chamber cover and the middle portion of the refining chamber can be opened in the radial direction by means of a mechanical arm and a hinge with the refining chamber base as the basis, so that refining chamber maintenance and adhesive disc replacement are facilitated. Under the condition that the effective refining area stays the same, the no-load power consumption of the biconical high consistency refiner is much lower than that of a single-tray high consistency refiner and a three-tray high consistency refiner. Under the condition that the axial length stays the same, the radial size and no-load power consumption of the biconical high consistency refiner are smaller than those of a conical high consistency refiner.