Here's a circuit diagram of the power supply and battery charger.
There are two parts in this circuit, ie the battery charger with a fixed output voltage, which is 5VDC. Another part is the regulated power supply that can be regulated output voltage between 2-9 volts.
source: http://www.electronics-lab.com
There are two parts in this circuit, ie the battery charger with a fixed output voltage, which is 5VDC. Another part is the regulated power supply that can be regulated output voltage between 2-9 volts.
source: http://www.electronics-lab.com
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power supplies