This power supply based 7805 IC regulator, it can provides a regulated output voltage of between 5 V to 15 VDC, it is adjusted and set by a preset resistor.
Maximum output current range of this power supply is 350 mA, its enough to supply powered calculator, radio, or cassete player. An integrated circuit regulates the output voltage and although this 7805 IC is generally applied to a fixed-voltage of 5 Vdc supply it is for a variable output voltage.
5V to 15V power supply using IC 7805 regulator parts list: RV1 : 4K7 D1, D2 : 1N4001 C1 : 1000 uF/25V C2 : 220nF IC1 : 7805
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