The invention relates to a double limiting mechanism. A limiting shaft, a limiting block, a backward rotation limiting switch and a forward rotation limiting switch are fixed on a limiting seat, a limiting gear is fixed to the limiting shaft via a bearing, and a main shaft gear engaged with the limiting gear is fixed on a limited main shaft; a mechanical limiting column is fixed on the limiting gear, the limiting block is in the rotation track of the mechanical limiting column, and mechanical limiting is realized; and an electrical limiting pillar is fixed on the limiting gear, the backward rotation limiting switch and the forward rotation limiting switch are in the rotation track of the electrical limiting column, and electrical limiting is thus realized. Multi-loop mechanical limiting and electrical limiting are realized simultaneously, so that communication cables of a motor and installation equipment can be protected.

Double limiting mechanism

The invention discloses a high-frequency alternating-current power supply control circuit of an electron tube power amplifier. A high-frequency alternating-current power supply comprises a [pi]-type filter circuit, a rectifying circuit, a filter circuit, a load circuit, a power-on starting circuit and an oscillating circuit which are connected in sequence, wherein the [pi]-type filter circuit is connected with commercial power, the output end of the power-on starting circuit is connected with the control end of the oscillating circuit, the input end of the oscillating circuit is connected withthe filter circuit, and the output end of the oscillating circuit is connected with the input end of the load circuit. The high-frequency alternating-current power supply control circuit has the advantages that: a novel electron tube filament power supply mode is adopted, and the problems of alternating current hum, low power factor and low efficiency of various power supplies in the prior art are effectively solved through a high-frequency alternating current power supply which has high efficiency and high frequency and does not influence the tone quality and the service life of the electrontube; and meanwhile, the technical problems that electron current emission is influenced by a deflection magnetic field generated by a low-voltage direct-current power supply and the service life ofan electron tube is influenced by weakening electron emission kinetic energy are solved; and key power device protection measures are detailed.

High-frequency alternating-current power supply control circuit of electron tube power amplifier

The invention provides an LED bracket baking process, and belongs to the technical field of LED lamp making The LED bracket baking process comprises the following steps of (1) selecting a qualified LED bracket; (2) placing the LED bracket into a drying oven, evenly coating the LED bracket with enhancers, and then carrying out one time of drying; (3) carrying out the second time of drying on the LED bracket; (4) placing the LED bracket subjected to the two times of drying into the drying oven for the third time of drying, and carrying out pressurization processing on the inside of the drying oven; and (5) taking out the LED bracket subjected to three times of drying, and placing the LED bracket indoor for room temperature cooling to obtain an LED bracket product With the LED bracket baking process, drying is complete, the antistatic performance of an obtained LED bracket is good; the LED bracket dried with the LED bracket baking process is good in quality and contains no moisture; and the LED bracket dried with the LED bracket baking process has the antistatic performance, and it is guaranteed that an LED lamp made later is good in operational performance

LED bracket baking process

The invention discloses a high-power LED lamp heat dissipating device and an application method thereof The high-power LED lamp heat dissipating device comprises a lamp holder, a copper tube, a nozzle, an evaporimeter, a cavity, a cooling liquid and heat dissipation fans, wherein a spiral interface of an LED lamp is formed in the upper part of the lamp holder; the heat dissipation fans are arranged on the side surface of the spiral interface; the evaporimeter is arranged above the copper tube; the interface of the evaporimeter is communicated with the copper tube; the copper tube penetrates the lamp holder, and is connected to the two sides of the cavity; the nozzle is arranged at the inlet of the cavity; the copper tube, the cavity and the evaporimeter form an airtight loop; the whole airtight loop is filled with the cooling liquid; the lamp holder is made of heat dissipating aluminum profile; a capillary core is arranged inside the evaporimeter, and is used for generating a capillary force to drive the loop running; the copper tube penetrates the lamp holder; the copper tube inside the lamp holder is curved and tightly fits the top of the lamp holder Through the adoption of the scheme, plenty of heat generated by the LED lamp can be effectively emitted, the service life of the LED lamp can be prolonged, and a very high market application value can be achieved

High-power LED lamp heat dissipating device and application method thereof

The invention discloses an LED linear light source based on aluminum substrate heat dissipation. The LED linear light source comprises an LED linear light source body; the outer side of the LED linearlight source body comprises an outer shell; a light source equipment chamber is formed in the outer shell, and is provided with a light source circuit board; and an LED light source module is fixedlymounted at the top of the light source circuit board. Heat is transferred to a heat dissipation aluminum substrate layer; the heat dissipation aluminum substrate layer transfers the heat to a heat conducting gasket; the heat conducting gasket transfers the heat to a heat dissipation aluminum base material layer; and finally, the heat is transferred to the outer side of the LED linear light sourcebody, so that the heat dissipation treatment is realized, the internal heat dissipation effect is accelerated, the air circulation is guaranteed, the heat treatment effect of a heat dissipation aluminum base material is improved, the heat transfer is accelerated, the heat dissipation effect is improved, the heat dissipation advantage of an aluminum substrate is achieved, and the problem of influence on use of an LED linear lamp due to burning down of the LED linear lamp easily caused by weaker heat dissipation effect of the traditional LED linear lamp is effectively solved.

LED linear light source based on aluminum substrate heat dissipation

The invention provides an energy-saving control circuit for an LED. The energy-saving control circuit comprises a power supply protection circuit, a time delay circuit, a light-operated circuit, a sound-control circuit and a constant-current drive circuit, wherein the power supply protection circuit is connected with a power supply through an input end; and an output end of the power supply is connected with the input end of the light-operated circuit. Through the control circuit provided by the invention, when the light is bright during the day or night, the overall circuit is controlled by a light-operated part, the light-operated circuit detects the external brightness, and outputs a voltage signal corresponding to the brightness, so that control on the brightness of a lamp through the illumination intensity is achieved; the higher the illumination intensity is, the lower the power of the lamp is; and the lower the illumination intensity is, the higher the power of the lamp is.

Energy-saving control circuit for LED

The utility model discloses an LED intelligent household gateway control system. Wherein the control system mainly comprises a control front end, a central processing unit, a wireless communication device, a storage device and a control rear end, the wireless communication device comprises a Zigbee device, a WiFi device and a remote control device, and the Zigbee device, the WiFi device and the remote control device are connected with the central processing unit; the storage device comprises a data storage device and a cloud storage device, and the data storage device is connected with the cloud storage device; the control rear end comprises an intelligent input/output device and a working unit; according to the utility model, the short-distance and long-distance wireless communication technology is applied to the LED home gateway control, and the improved wired control system is matched, so that the control of the whole system is more accurate, safer and more stable, the data can be stored and subjected to cloud backup in time, and the whole control system can be controlled in a feedback manner in time.

LED smart home gateway control system

The invention provides an efficient heat-dissipating lamp saving energy. The induction lamp saving the energy comprises a lamp tube, a lamp base and a lamp cap. A lamp cap hood capable of being fixedly connected to the lamp tube is arranged between the lamp cap and the lamp tube. A pair of protruding semi-sectional spiral installing tubes is arranged at the combined end of the lamp cap hood and the lamp tube. A plurality of heat-dissipating holes are formed in the walls of the semi-sectional spiral installing tubes. A plurality of heat-dissipating cracks are formed in the side wall of the lamp cap. At least one heat-dissipating fin is arranged in the heat-dissipating cracks. Specifically, one heat-dissipating fin is arranged in the heat-dissipating cracks of the inner side wall of the lamp cap. If the number of the heat-dissipating fins is large, the heat-dissipating cracks will be blocked, and the heat-dissipating effect of the heat-dissipating cracks is influenced. The heat-dissipating fin is folded into a rectangular tube with the same cross section as the cross sections of the heat-dissipating cracks. Due to the design, under the circumstance of not influencing the heat-dissipating effect of the heat-dissipating cracks, the heat-dissipating fin is utilized so that the heat-dissipating effect of the lamp saving the energy can be optimal.

Efficient heat-dissipating lamp saving energy

The utility model discloses a multi -functional ball bubble lamp, including ball bubble lamp body, wherein being equipped with the heat dissipation base below the ball bubble lamp body, being equipped with the fan in the heat dissipation base, be equipped with the card that ventilates on the side of heat dissipation base, the base upper end of dispelling the heat is equipped with the rand, and the heat dissipation base has the fixing base, and the one end of fixing base is equipped with the handle, and the upper surface and the lower surface of fixing base are equipped with slide rail and lower slide rail respectively, and the heat dissipation base lies in the slide rail, and the fixing base bottom is equipped with screw card post, and screw card post lies in slide rail down, and the body outside is equipped with the lamp shade, and the bottom of lamp shade is equipped with the through -hole This ball bubble lamp adopts the mode of heat dissipation base and fixing base to increase the radiating rate that this ball steeps the lamp, and the fan in the heat dissipation base can increase the mobile speed of air And the fixing base can and change irradiation position so that this ball bubble lamp moves to increase and shine the area

Multi -functional ball bubble lamp

The invention discloses a solar energy high-efficient mosquito killer lamp, which comprises a supporting rod, a solar energy panel component and a mosquito killer lamp component; the bottom part of the supporting rod is equipped and fixed with the solar energy panel component; a group of mosquito killer lamp component electrically connected with the solar energy panel component is fixed on the supporting rod through an installing base; the mosquito killer lamp component comprises a mosquito killing shell body; a venting hole is arranged on the top face of the mosquito killing shell body; the lower part of the venting hole is provided with a fan, and an UV lamp tube is arranged beneath the fan; a mosquito entering hole is arranged on the outer wall of the mosquito killing shell body, the lower end of the mosquito killing shell body is provided with a funnel type conical cover; the opening of the upper end of the conical cover is equipped with an electric shock component, and the electric shock component comprises an electric shock frame and two layers of electric shock wire meshes installed in the electric shock frame; two layers of electric shock wire meshes are connected with positive and negative output ends of the solar energy panel component. The solar energy high-efficient mosquito killer lamp is reasonable in structural design, high in solar energy utilization rate, and can completely kill the mosquito and effectively keep out wind and rain; therefore, the safety performance of using is high.

Solar energy high-efficient mosquito killer lamp

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