Abstract: An immersion cooling system is provided and includes: a box body having a first accommodating space and a second accommodating space, where the first accommodating space accommodates a heat dissipation medium and at least one heating unit; a condensing unit arranged in the second accommodating space; and at least one valve unit disposed in the box body and corresponding to the second accommodating space and the condensing unit. The gasified heat dissipation medium flows and impacts the condensing unit to blow off the liquefied heat dissipation medium attached onto the condensing unit when the valve unit is opened.

Abstract: A switching board and a soldering method thereof are provided. The switching board includes a circuit board having a board body and a first metal ring, where the board body has a first surface, and the first metal ring is formed on the first surface and surrounds a periphery of the board body. The switching board further includes a first metal element disposed on the first surface and fastened to the first metal ring by soldering. The switching board has a high pressure resistance and a low leakage rate.

Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module is used to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to the load device being connected or not.

Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module provides a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to whether the load device is connected to the Ethernet power supply.

Abstract: A heat dissipation device is provided and includes a frame body having an airflow channel therein; a first partition plate and a second partition plate for separating the airflow channel into a first channel, a second channel, a third channel and a fourth channel; a first flow guiding structure for isolating the fourth channel from the second channel; and a second flow guiding structure for isolating the first channel from the third channel. The first partition plate, the first flow guiding structure, the second flow guiding structure and the second partition plate collectively form a first flow channel communicating the first channel and the fourth channel and a second flow channel communicating the second channel and the third channel, where the first flow channel and the second flow channel are separate from one another.

Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module is used to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to the load device being connected or not.

Abstract: An Ethernet power supply receives a DC voltage through a bus positive terminal and a bus negative terminal, and is coupled to a load device. The Ethernet power supply includes a first control module and a second control module. The first control module provides a first control signal through the bus negative terminal to confirm whether the load device is a valid load. The second control module is used to connect or disconnect a coupling relationship between the bus positive terminal and the first control module according to whether the load device is connected to the Ethernet power supply.

Abstract: A heat dissipation device is provided and includes a frame body having an airflow channel therein; a first partition plate and a second partition plate for separating the airflow channel into a first channel, a second channel, a third channel and a fourth channel; a first flow guiding structure for isolating the fourth channel from the second channel; and a second flow guiding structure for isolating the first channel from the third channel. The first partition plate, the first flow guiding structure, the second flow guiding structure and the second partition plate collectively form a first flow channel communicating the first channel and the fourth channel and a second flow channel communicating the second channel and the third channel, where the first flow channel and the second flow channel are separate from one another.

Abstract: A power source device coupled to a power device includes an output port and a controller. When the output port is coupled to a connection cable, the controller is activated to generate a handshake signal, so as to communicate with the power device. When it is determined that the power device is able to be powered according to the handshake signal, the controller controls the power supply device to power the power device through the connection cable. When the connection cable is not coupled to the output port, the controller is deactivated and thus the handshake signal is not generated.

Abstract: A power source device coupled to a power device includes an output port and a controller. When the output port is coupled to a connection cable, the controller is activated to generate a handshake signal, so as to communicate with the power device. When it is determined that the power device is able to be powered according to the handshake signal, the controller controls the power supply device to power the power device through the connection cable. When the connection cable is not coupled to the output port, the controller is deactivated and thus the handshake signal is not generated.

Abstract: An optical measuring apparatus and an operating method thereof are disclosed. The optical measuring apparatus includes a light source, a carrier chip, a light sensor, an analyzing chip and a display. Samples are uniformly distributed on the carrier chip. The light source emits sensing lights toward the carrier chip. The light sensor receives the sensing lights passing through the carrier chip at a plurality of times to obtain a plurality of images corresponding to the plurality of times respectively. The analyzing chip is coupled to the light sensor. The analyzing chip analyzes the object number and distribution variation with time in the sample according to the plurality of images corresponding to the plurality of times and estimates intrinsic characteristics of the object in the sample accordingly. The display is coupled to the analyzing chip. The display displays the intrinsic characteristics of the object in the sample.

Abstract: An optical measuring apparatus and an operating method thereof are disclosed. The optical measuring apparatus includes a light source, a carrier chip, a light sensor, an analyzing chip and a display. Samples are uniformly distributed on the carrier chip. The light source emits sensing lights toward the carrier chip. The light sensor receives the sensing lights passing through the carrier chip at a plurality of times to obtain a plurality of images corresponding to the plurality of times respectively. The analyzing chip is coupled to the light sensor. The analyzing chip analyzes the object number and distribution variation with time in the sample according to the plurality of images corresponding to the plurality of times and estimates intrinsic characteristics of the object in the sample accordingly. The display is coupled to the analyzing chip. The display displays the intrinsic characteristics of the object in the sample.

Abstract: A frequency tracking circuit is disclosed. The frequency tracking circuit includes an edge selector, a phase-frequency processor and a digital controlled oscillator. The edge selector receives a data signal and feedback clock signal and sequentially outputs a data edge signal and a feedback-clock-edge signal. The phase-frequency processor receives the data edge signal and the feedback-clock-edge signal and outputs a frequency adjusting digital signal after executing differential operation according to a first phase difference and a second phase difference. The digital controlled oscillator receives the frequency adjusting digital signal so as to adjust frequency of the feedback clock signal. The phase-frequency processor outputs a frequency tracking signal to the edge selector, wherein the edge selector utilizes the frequency tracking signal for acquiring the data edge signal and utilizes the data edge signal for acquiring the feedback-clock-edge signal.

Abstract: A frequency tracking circuit is disclosed. The frequency tracking circuit includes an edge selector, a phase-frequency processor and a digital controlled oscillator. The edge selector receives a data signal and feedback clock signal and sequentially outputs a data edge signal and a feedback-clock-edge signal. The phase-frequency processor receives the data edge signal and the feedback-clock-edge signal and outputs a frequency adjusting digital signal after executing differential operation according to a first phase difference and a second phase difference. The digital controlled oscillator receives the frequency adjusting digital signal so as to adjust frequency of the feedback clock signal. The phase-frequency processor outputs a frequency tracking signal to the edge selector, wherein the edge selector utilizes the frequency tracking signal for acquiring the data edge signal and utilizes the data edge signal for acquiring the feedback-clock-edge signal.