A charging apparatus is provided according to some embodiments. The charging apparatus includes (1) charging circuitry configured to connect to a plurality of battery packs in parallel and (2) processing circuitry configured to control the charging circuit...

A power control system (15) includes a first switch (23) configured to receive electrical power from a power source (14) and selectably provide the electrical power to a load (46). A current limiter (50) is intermediate the first switch and the load. A sec...

A power supply control apparatus (2) includes: an output transistor (T1) coupled between a first power supply line and an output terminal (OUT), the output terminal (OUT) being configured to be coupled with a load (11); a protection transistor (MN8) couple...

An object is to provide an inverter device by which a diode for a countermeasure against reverse connection of a direct-current power supply can be abolished, the inverter device has a constitution in which a switching unit is connected between a battery c...

An adapter device includes a DC/DC adapter to receive DC power from a DC power source, and output a regulated DC voltage (V out ). A source determination circuitry receives the DC power from the DC power source and compares a magnitude of a voltage of the ...

A portable electric device (10) includes i) an electric circuit (12) operable on electric current derived from a first connector (B) preferably connectable to a first counterpart connector (B') of a battery (11), ii) a charge input (13) electrically connec...

A battery protection circuit for use between a battery output and a load is achieved. The circuit comprises, first, a plurality of fused cells coupled in parallel between the battery output and the load. Each fused cell comprises, first, a fuse having firs...

The battery pack comprises at least one accumulator (5), two external connection terminals, one of which is positive (2) and the other negative (3), and a safety circuit (4) connected to prevent any charging current from entering the accumulator (5) as soo...