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PT 2308 Headphone Driver IC

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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

toggle on off switch with relay 5v

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2.5W * 2 (stereo) Amplifier [Tested]

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IC - PT2305 Supply Voltage- 5V Operating current - 30mA all the ground pins must be connected to oV (-)

Automatic 230 v LED Lamp

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BE CAREFUL ! You are going to handle 230v  make the circuit and test  carefully! The LDR face needs to come off of the cover of the bulb, as the bulb works depending the background light condition.And also you must be clever to fix LDR on a place that will not fall LED light of its own 230 v -[Neutral , Phase ]

Dark sensitive circuit [Tested]

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Digital volume control

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this is a mono circuit.you can input audio signal to input and the output to the amplifier. S1 and S2 can be used to up and down volume

5.1 Surround decorder circuit

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