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CHARGING UNIT or CHARGING UNITS
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Technical Examples
- On-premises pager loss is reduced by alerting patrons they are out of range. Pagers include an LCD with messages or promotions. An LED on the pager emits different colors indicating the level of battery charge. Circuitry in the pager causes a higher charge to be delivered to the battery when the pager is first coupled to a charging unit, and a lower charge to be delivered thereafter. Stacked slots in the charging unit receive the pagers. This permits access without disconnection of pagers in other slots and removal from the slots using first-in-first-out rotation. Charging rails on the charging unit simultaneously and directly connect each pager in the slots. Charging units are electrically coupled to other units in a daisy chain. A light on the unit indicates whether it is receiving power. Conductors on the pagers mechanically interlock with the charging rail when a pager is inserted into a slot.
- In a basic circuit of a booster circuit, two charging units perform a charging operation and two boosting units perform a boosting operation (discharging operation). One of the charging units is connected to a voltage input and the other is connected to a voltage output. The charging unit that is connected to the voltage input includes three parallel connected MOS transistors Q11, Q12, and Q13, the other charging unit includes a MOS transistor Q4. One of the boosting units is connected to the voltage input and the other is connected to the voltage output. The boosting unit that is connected to the voltage input includes three parallel connected MOS transistors Q31, Q32, and Q33, the other boosting unit includes a MOS transistor Q2. Q11 and Q31 are turned ON immediately after start up, then Q12 and Q32 are turned ON and finally Q13 and Q33 are turned ON.
- A portable electronic apparatus includes first and second modules, and a control unit. The first module includes a first charging circuit to be coupled to a first power source, and a first battery unit coupled to the first charging circuit. The second module is connected removably to the first module, and includes a second charging circuit to be coupled to a second power source, and a second battery unit coupled to the second charging circuit. The control unit enables the first and second battery units to be charged independently and respectively through the first and second charging circuits using the first and second power sources when the second module is disconnected from the first module, and enables the first and second battery units to be charged through the first charging circuit using the first power source when the second module is connected to the first module.
- An in-rush current limiter and method is provided. The in-rush current limiter reduces the maximum current that is drawn during system startup of an avionics system. During startup, power is provided through a power supply bus to a plurality of avionics units that are each coupled to the power bus. To reduce the maximum current drawn by the avionics units during startup, the in-rush current limiter includes a current limiter controller, a charging circuit, and a switching circuit. Specifically, during system startup the main current path from the power supply bus is interrupted by the switching circuit while an alternate current path is connected through the charging circuit. During this charging the amount of current flowing through the charging circuit is limited to an acceptable level by a resistive element in the charging circuit.
- A charging apparatus having a charging device for contact charging a rotatable member. The charging device rotates upon reception of a drive force from a drive force transmitting device. The axis of rotation of the charging roller and the axis of rotation of the photoreceptor drum intersect each other. It is a characteristic of the invention that a force received by the charging device from the drive force transmitting device and a force generated between charging device and the rotatable member are oriented in the same direction. With this arrangement, the thrust position of the charging device when the charging device is driven is stabilized.
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