Abstract: A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a first connector connected to a first load configured to function by power supplied from the power supply; a second connector configured to function by power supplied from the power supply and connected to a second load separate from the first load; a Zener diode connected between the first connector and the power supply; and a variable resistor connected between the second connector and the power supply.

Abstract: A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a receptacle configured to allow insertion of a plug including a plurality of pins and configured to receive power for charging the power supply from the inserted plug; and a charger configured to control charging of the power supply by power received by the receptacle. The receptacle includes pins connectable to only some of pins among the plurality of pins.

Abstract: A power supply unit for an aerosol inhaler includes: a power supply configured to supply power to a load that atomizes an aerosol source; a temperature sensor configured to detect a temperature of the power supply; a controller; and a circuit board. The circuit board includes: a first surface; a second surface; a power supply layer in which a power supply path is formed; and a ground layer. The power supply layer and the ground layer are provided between the first surface and the second surface. The temperature sensor is mounted on the second surface, and at least one of the power supply path and the ground path is not formed in a region which overlaps the temperature sensor as viewed from a first direction, the first direction being a direction in which the first surface and the second surface are opposed to each other.

Abstract: A power supply unit for an aerosol inhaler includes: a power supply configured to supply power to a load that atomizes an aerosol source; a temperature sensor configured to acquire a temperature of the power supply; a controller; and a circuit board on which a plurality of elements including the temperature sensor and the controller are mounted. The circuit board includes a first surface and a second surface which is a reverse surface from the first surface or is located on a side opposite from the first surface. The plurality of elements are mounted on each of the first surface and the second surface. The second surface faces the power supply, and/or the second surface is arranged closer to the power supply than the first surface. The temperature sensor is mounted on the second surface.

Abstract: A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a first connector connected to a first load configured to function by power supplied from the power supply; a second connector configured to function by power supplied from the power supply and connected to a second load separate from the first load; a Zener diode connected between the first connector and the power supply; and a variable resistor connected between the second connector and the power supply.

Abstract: A power supply unit for an aerosol generation device includes: a connector to which a heater configured to heat an aerosol source is connected; a power supply; a boost converter connected between the power supply and the connector; and a switch connected between the boost converter and the connector.

Abstract: A power supply unit for an aerosol inhaler includes: a power supply; a first DC/DC converter; a second DC/DC converter; and a circuit board. As viewed from a first direction perpendicular to a surface of the circuit board on which the first DC/DC converter and the second DC/DC converter are mounted, at least a portion of the circuit board includes: a connection portion; a first portion extending from the connection portion in a second direction perpendicular to the first direction; and a second portion extending from the connection portion in a third direction perpendicular to the first direction and the second direction. The first DC/DC converter is mounted on the first portion, and the second DC/DC converter is mounted on the second portion.

Abstract: A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a step-up system configured to function by a stepped-up voltage supplied from the power supply; a step-down system configured to function by a stepped-down voltage supplied from the power supply; and a direct-coupling system configured to function by a voltage supplied from the power supply.

Abstract: A power supply unit for an aerosol generation device includes: a power supply configured to supply power to a heater configured to heat an aerosol source; a receptacle configured to receive power for charging the power supply from a plug connected to an external power supply; a charger configured to control charging of the power supply by power received by the receptacle; and a controller. The receptacle and the power supply are connected in parallel with the charger, and the charger is configured to supply power from the receptacle and the power supply to the controller via the charger.

Abstract: A measurement device for a light-emitting device includes a light attenuator, a photometric sphere, and a light detector. The light attenuator includes a first surface and a heat dissipator. A first light that is emitted from the first light-emitting device is incident on the first surface. The first surface is configured to absorb a portion of the first light. The heat dissipator is configured to dissipate heat of the first surface. The photometric sphere has an inner surface to reflect the first light reflected by the first surface. The light detector is configured to receive at least a portion of the first light reflected by the inner surface.

Abstract: A light-emitting module includes a light emitter including a first semiconductor light-emitting element, a second semiconductor light-emitting element, and a third semiconductor light-emitting element. A first current regulator is to supply the first current to the first semiconductor light-emitting element. The second current regulator is to supply the second current to the second semiconductor light-emitting element. The third current regulator is to supply the third current to the third semiconductor light-emitting element. A control circuit is configured to control at least one of the first current regulator to control the first current, the second current regulator to control the second current, or control the third current regulator to control the third current according to at least one of fluctuation of the first voltage drop, fluctuation of the second voltage drop, or fluctuation of the third voltage drop.

Abstract: An ultraviolet irradiation device includes a light-emitting element, a temperature control element, and a control circuit. The light-emitting element is configured to emit an ultraviolet light. The temperature control element is configured to control a temperature of the light-emitting element. The control circuit is configured to control the temperature control element based on a voltage of the light-emitting element so as to control a peak wavelength of the ultraviolet light.

Abstract: A measurement device for a light-emitting device includes a light attenuator, a photometric sphere, and a light detector. The light attenuator includes a first surface and a heat dissipator. A first light that is emitted from the first light-emitting device is incident on the first surface. The first surface is configured to absorb a portion of the first light. The heat dissipator is configured to dissipate heat of the first surface. The photometric sphere has an inner surface to reflect the first light reflected by the first surface. The light detector is configured to receive at least a portion of the first light reflected by the inner surface.

Abstract: A light-emitting module includes a light emitter including a first semiconductor light-emitting element, a second semiconductor light-emitting element, and a third semiconductor light-emitting element. A first current regulator is to supply the first current to the first semiconductor light-emitting element. The second current regulator is to supply the second current to the second semiconductor light-emitting element. The third current regulator is to supply the third current to the third semiconductor light-emitting element. A control circuit is configured to control at least one of the first current regulator to control the first current, the second current regulator to control the second current, or control the third current regulator to control the third current according to at least one of fluctuation of the first voltage drop, fluctuation of the second voltage drop, or fluctuation of the third voltage drop.

Abstract: An LED driving apparatus is provided. The apparatus includes an LED Portion 10, a charging/discharging capacitor 111, a capacitor charging and discharging paths, and a capacitor charging constant current portion 110. The LED driving portion 3 controls a current in the LED portion 10. The capacitor 111 is connected in parallel to the LED portion 10. The charging and discharging paths are connected to the capacitor whereby charging and discharging the capacitor, respectively. The constant current portion 110 is connected on the charging path and controls a charging current so that the capacitor is charged at a constant current. When rectified voltage applied to the LED portion becomes high, the capacitor is charged with the charging current through the charging path. When the voltage becomes low, the capacitor is discharged at a discharging current through the discharging path so that the discharging current is applied to the LED portion.

Abstract: An apparatus includes first and fourth bypasses, a current detector, and a current controller. The first bypass is connected serially to a first LED, and controls the current amount in the first LED. The fourth bypass is connected serially to a second LED, and controls the current amount in the first and second LEDs. The detector detects current detection signal based on the current amount on an output line along which the first and second LEDs are connected serially to each other. The controller provides control signal for controlling the first and fourth bypasses based on the detection signal. The controller includes one output for providing the control signal. The first and fourth bypasses are connected in parallel to the one output.

Abstract: An LED driving apparatus for suppressing harmonic components is provided. First and fourth portions 21 and 24 are in parallel to the first and second LEDs 11 and 12, respectively. The first portion 21 controls the current amount in said first LED 11. The fourth portion 24 controls the current amount in said first and second LEDs 11 and 12. The first and fourth controllers 31 and 34 control the first and fourth portions 21, respectively. A current detector 4 detects a signal based on the amount of a current flowing from the first and second LEDs 11 and 12. A signal providing portion 6 provides a voltage based on a rectified voltage provided from a rectifying circuit 2. The first and fourth controllers 31 and 34 compare the current detection signal with the signal voltage, and control the first and fourth portions 21 and 24 based on the comparison.

Abstract: An LED driving apparatus for suppressing harmonic components is provided. First and fourth portions 21 and 24 are in parallel to the first and second LEDs 11 and 12, respectively. The first portion 21 controls the current amount in said first LED 11. The fourth portion 24 controls the current amount in said first and second LEDs 11 and 12. The first and fourth controllers 31 and 34 control the first and fourth portions 21, respectively. A current detector 4 detects a signal based on the amount of a current flowing from the first and second LEDs 11 and 12. A signal providing portion 6 provides a voltage based on a rectified voltage provided from a rectifying circuit 2. The first and fourth controllers 31 and 34 compare the current detection signal with the signal voltage, and control the first and fourth portions 21 and 24 based on the comparison.

Abstract: An LED driving apparatus is provided. The apparatus includes an LED Portion 10, a charging/discharging capacitor 111, a capacitor charging and discharging paths, and a capacitor charging constant current portion 110. The LED driving portion 3 controls a current in the LED portion 10. The capacitor 111 is connected in parallel to the LED portion 10. The charging and discharging paths are connected to the capacitor whereby charging and discharging the capacitor, respectively. The constant current portion 110 is connected on the charging path and controls a charging current so that the capacitor is charged at a constant current. When rectified voltage applied to the LED portion becomes high, the capacitor is charged with the charging current through the charging path. When the voltage becomes low, the capacitor is discharged at a discharging current through the discharging path so that the discharging current is applied to the LED portion.