Abstract: A vehicle charging device and a method applied to the device are disclosed. The device includes a transformer and two impedance tuners. One side of the transformer has two communication wires to couple with an electric vehicle. Each of the two impedance tuners is connected in parallel to one of the two communication wires. The two impedance tuners are configured to regulate reactance characteristics of the two communication wires. Therefore, the impedance of the communication wires can be gradually regulated in response to the signal strength, such that the vehicle charging device and the electric vehicle communicate in a state approaching impedance matching to prevent charging abnormalities caused by an excessively high bit error rate in data exchange.

Abstract: A control circuit and a control method of an EVSE are provided. The control circuit includes a signal generator, a PWM unit, a relay and a detection circuit. The signal generator generates a voltage signal. The PWM unit is electrically connected to a control pilot signal between the EVSE and an electric vehicle. The detection circuit detects the control pilot signal and generates a detection signal. The control circuit selectively performs a first mode or a second mode, under the first mode, the relay switches the PWM unit to electrically connect with the voltage signal, and under the second mode, the relay switches the PWM unit to electrically connect with the reference voltage. The control circuit obtains an error value by comparing the detection signals under the first and second modes, and during performing the first mode, the control circuit compensates the control pilot signal according to the error value.

Abstract: A testing system used for an air sensing device is disclosed, the testing system includes a controller, a vacuum test cabinet, a molecule generator, a vacuum pump, a VOC sensor, a carbon dioxide sensor, a temperature sensor, a humidity sensor, and a heater. The vacuum test cabinet accommodates the air sensing device to be tested. The controller controls the vacuum pump to extract air from the vacuum test cabinet so as to create a predetermined vacuum level. The controller controls the molecule generator to generate a quantitative gas and transmits the quantitative gas to the vacuum test cabinet. The controller obtains a system value of gas data. The controller obtains a measure value of the gas data of the air sensing device and compares the measure value with the system value to determine whether the air sensing device senses correctly.

Abstract: A testing system used for an air sensing device is disclosed, the testing system includes a controller, a vacuum test cabinet, a molecule generator, a vacuum pump, a VOC sensor, a carbon dioxide sensor, a temperature sensor, a humidity sensor, and a heater. The vacuum test cabinet accommodates the air sensing device to be tested. The controller controls the vacuum pump to extract air from the vacuum test cabinet so as to create a predetermined vacuum level. The controller controls the molecule generator to generate a quantitative gas and transmits the quantitative gas to the vacuum test cabinet. The controller obtains a system value of gas data. The controller obtains a measure value of the gas data of the air sensing device and compares the measure value with the system value to determine whether the air sensing device senses correctly.

Abstract: A battery control system includes N batteries, N control switches, a solar energy charging module, and a processing module, wherein N is a positive integer larger than one. The N batteries are arranged in parallel, each of the control switches is connected to one of the batteries, and the solar energy charging module is connected to the control switches. The processing module is connected to the control switches and the solar energy charging module. The processing module selectively controls the i-th control switch to form a close circuit between the corresponding i-th battery and the solar energy charging module and controls the other N?1 control switches to form open circuits between the corresponding N?1 batteries and the solar energy charging module, wherein i is a positive integer smaller than or equal to N.

Abstract: A player is designated as the ‘banker’. The ‘banker’ moves clockwise from player to player as each game is completed. The dealer deals the first card to the player immediately clockwise of the player who is the ‘banker’. The cards are then continued to be dealt one by one in a clockwise fashion until all players have received 2 cards. Each player has the option to keep both cards or to discard at most 1 card. Play again moves clockwise starting with the player immediately clockwise of the player who has been designated as the ‘banker’ for this game. All 2 card hands are then displayed. Each player starts with their highest scoring card and compares it with the ‘banker’ highest score card. Each player then compares their second highest card to the ‘banker’ second highest card. The ‘banker’ wins against a player if both of his/her cards beat the player's cards.