| IC1 | 7805 | Positive 1.5A 35V Linear Regulator, Fixed Output 5V, TO-220/TO-263/TO-252 |
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| IC3 | TDA2002 | Single power-distribution switcher, current limit = 50mA, blanking time = 10 ms, w/o auto-restart, ON Pin Polarity = HIGH, SOT-353 |
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| Q1 | BC107 | 0.1A Ic, 50V Vce, Low Noise General Purpose NPN Transistor, TO-18 |
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| U1 | MCP6V67EMS | Dual Operational Amplifiers, Zero-Drift, 80 kHz Bandwidth, 1.8V to 5.5V, Rail-to-Rail, MSOP-8 |
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| C1 | 470 uF | Polarized capacitor |
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| C2 | 1000 uF | Polarized capacitor |
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| D1,D2 | 1N4007 | Diode |
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| K1 | Speaker | Speaker |
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| L1 | 9V BULB | Inductor |
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| R1 | 2.2 | Resistor |
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| R2 | 220 | Resistor |
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| R3,R4 | 100K POT | Potentiometer |
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| R5 | A1050 | light dependent resistor |
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| R6 | 1K | Resistor |
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