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DDDIG circuit A Led indicator was added to indicate proper power supply... | Download Scientific Diagram
Dual power supply Led indicator circuit. | Electronics Forum (Circuits, Projects and Microcontrollers)
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LED Circuit Board Indicator 3mm (T-1) Amber/Green 2 Position Right Angle 603 nm/562 nm 2.0V/2.2V 7 mcd/16 mcd - VCC
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