摘要:
A voltage converter includes a driver, a subsidiary voltage converter, an inductor, a capacitor, and a voltage detection unit. The subsidiary voltage converter generates a driving voltage transmitted to the driver to supply working power to the driver. The driver controls the capacitor to be alternately charged and discharged through the inductor, thereby generating an output voltage and output current between the inductor and the first capacitor. The voltage detection unit detects an electric potential difference of the inductor and generates a reference voltage according to the electric potential difference, and the subsidiary voltage converter receives the reference voltage and adjusts the driving voltage according to the reference voltage.
摘要:
A heat-dissipating device (1) includes a casing (10) and a thermal insulation plate (20) provided within the casing (10). The thermal insulating plate (20) divides the interior of the casing (10) into a first accommodating space (101) and a second accommodating space (102). A hot air outlet (121) and a first air inlet (122) of the casing (10) are in communication with the first accommodating space (101). A cold air outlet (110) and a second air inlet (123) of the casing (10) are in communication with the second accommodating space (102). A thermoelectric cooling chip (30) is disposed in a through-hole (200) of the thermal insulation plate (20) and has a hot-end surface (31) facing the first accommodating space (101) and a cold-end surface (32) facing the second accommodating space (102). A heat-dissipating module (40) is received in the first accommodating space (101). A cold-airflow supplying module (50) is received in the second accommodating space (102). The heat generated by the hot-end surface (31) is dissipated to the hot air outlet (121) by the thermal conduction of the heat-dissipating module (40). The cold generated by the cold-end surface (32) is conducted and distributed uniformly by the cold-airflow supplying module (50) to the cold air outlet (110).
摘要:
A method for making heated plane of a cooler to obtain better flatness and roughness includes a grinder with a grinding plate and a fixture. Then, the cooler is arranged onto the fixture. Next, the abrasive is injected into the gap between the grinding plate and the heated plane, making the fixture press and clamp the cooler in a way, such that the heated plane of the cooler contacts the abrasive closely. Finally, the grinding plate is rotated to make at least one grinding process to the heated plane, making the heated plane obtain a surface with better roughness and flatness, further enhancing the contact tightness between the heated plane and a heating element, and therefore promoting the thermally conductive efficiency between the cooler and the heating element.
摘要:
A heat sink system and a heat sinking method having auto switching function are disclosed. The heat sink receives a control command sent by an external device. An internal heat sink device is controlled according to content of the control command to control power ON or power OFF of a thermoelectric cooler of the heat sink device or to control power ON, power OFF, or change rotation speed setting of a heat sink fan in the heat sink device. Thus, the heat sink auto switches operations of the heat sink device correspondingly according to temperature changes of the external device.
摘要:
A power adapter for an electronic device selectively works in different modes according to a working state signal of the electronic device. When the electronic device is powered off or on with a battery in a determined charge state, the power adapter controls a relay to turn off the relay to disconnect power to the electronic device.
摘要:
A heat sink includes a heat dissipation fins assembly, a heat spreader, and a heat pipe. The heat dissipation fins assembly includes a plurality of heat dissipation fins. A guide plate extruding from a bottom of each of the heat dissipation fins. The guide plate being connected to an adjacent heat dissipation fins. The heat dissipation fins are connected in series by the guide plate thereby defining a number of air channels. Each heat dissipation fin includes a through hole defined therein and aligned with each other. The heat spreader is disposed under the heat dissipation fins assembly and a through groove is formed in the heat spreader. A heat pipe passes through the through hole and the through groove. The heat sink has improved heat dissipation efficiency.
摘要:
A heat sink having auto switching function, a heat sink system and a heat sinking method are disclosed. The heat sink receives a control command sent by an external device. An internal heat sink device is controlled according to content of the control command to control power ON or power OFF of a thermoelectric cooler of the heat sink device or to control power ON, power OFF, or change rotation speed setting of a heat sink fan in the heat sink device. Thus, the heat sink auto switches operations of the heat sink device correspondingly according to temperature changes of the external device.
摘要:
A heat-dissipating device (1) includes a casing (10) and a thermal insulation plate (20) provided within the casing (10). The thermal insulating plate (20) divides the interior of the casing (10) into a first accommodating space (101) and a second accommodating space (102). A hot air outlet (121) and a first air inlet (122) of the casing (10) are in communication with the first accommodating space (101). A cold air outlet (110) and a second air inlet (123) of the casing (10) are in communication with the second accommodating space (102). A thermoelectric cooling chip (30) is disposed in a through-hole (200) of the thermal insulation plate (20) and has a hot-end surface (31) facing the first accommodating space (101) and a cold-end surface (32) facing the second accommodating space (102). A heat-dissipating module (40) is received in the first accommodating space (101). A cold-airflow supplying module (50) is received in the second accommodating space (102). The heat generated by the hot-end surface (31) is dissipated to the hot air outlet (121) by the thermal conduction of the heat-dissipating module (40). The cold generated by the cold-end surface (32) is conducted and distributed uniformly by the cold-airflow supplying module (50) to the cold air outlet (110).
摘要:
An adjusting structure of adjustable window curtain prop stand includes two prop plates and an adjusting structure arranged between the two prop plates. The adjusting structure further includes a lead screw, two displacing elements, two positioning elements and a plurality of connecting elements. The lead screw has two external threads respectively with different directions of spiral and available for being engaged with the two displacing elements thereon. The two positioning elements are respectively secured to inner side faces of the two prop plates to be located at an upper and a lower positions between the two displacing elements, where each connecting element is separately and actively connected between the two displacing elements and the two displacing elements, such that a linkage mechanism is formed by taking the two displacing elements as a gliding pair.
摘要:
A light emitting diode (LED) lamp tube heat dissipating structure is capable of dissipating heat in a tube quickly to improve the heat dissipating efficiency. A circuit board with a light radiating surface and a heat dissipating surface is contained in the tube, and the light radiating surface of the circuit board is electrically connected to LED lamps. Two conductive bushings are sheathed onto both ends of the tube and electrically connected with the circuit board, and at least one heat dissipating hole is disposed separately on both distal surfaces of the tube that covers the heat dissipating surface of the circuit board, such that external air is entered into the tube from the heat dissipating hole on a distal surface of the tube and dispersed from the heat dissipating hole on another distal surface of the tube for dissipating the heat in the tube.