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BD139 BD140 100W Bipolar Power Amplfier - Electronic Circuit
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Introduction to BD140 - The Engineering Projects
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2 Watt Class-AB Audio Amplifier by BD139 and BD140 - EEWeb
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Mono Power Amplifier using A1015, BD140 ,TIP2955 - Electronic Circuit
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750W sound amplifier circuit
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Introduction to BD140 - The Engineering Projects
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Transistor Basics | BD139 & BD140 Power Transistor Tutorial : 7 Steps
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5W Audio Amplifier Circuit based BD139/BD140 under Repository-circuits
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BD139 BD140 100W Bipolar Power Amplfier - Electronic Circuit
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Introduction to BD140 - The Engineering Projects
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LED Emergency Light Circuit Using LDR (Light Dependent Resistor)