Blinking LED circuit
5 to 7 volts will do
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PT 2308 Headphone Driver IC
PT2308 is a Class AB stereo headphone driver chip utilizing CMOS Technology specially designed for portable digital audio applications. It is housed in an 8-pin DIP or SOP package and is functionally compatible with TDA1308. Pin assignments and application circuit are optimized for lower cost effectiveness and easy PCB Layout Vdd = 5V DC