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Archives for November, 2009

Make a simple power amplifier – LM 380

This is Make a simple power amplifier – LM 380. Almost all the components are contained in a single 14 pin package and requiring few external components. The supply voltage can be from about 8 volts to not more than 15 volts. The device is supposed to have internal current limiting and be almost indestructable. […]

45W Audio Amplifier Circuit using STK055

45W Audio Amplifier Circuit using STK055

FM wireless microphone for the President’s speech

FM wireless microphone is very simple to build and has a useful transmission range (more than 300 meters in open air). Although a small component count and 3V operating voltage it will easily penetrate more than three floors of an apartment building. This may be found anywhere in the FM band (87-108MHz) and transmission can […]

Schematic of LCD Oscilloscope

Schematic of LCD Oscilloscope

LM555 Electronics Schematic Diagram Two Stage Time Delay Circuit part 29

LM555 Electronics Schematic Diagram Two Stage Time Delay Circuit part 29

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