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Posts tagged rain alarm circuit working

Rain detector circuit

Rain detector circuit LM1801, 2N2222, 4011B, NE555, LM555, BC547, BC107, 2N5825, BC548, BC168 Rain detector circuit 3 kinds of circuit diaghrams to dethect the rain water, the principle is the same, the difference is the component, and the results were good, of course should be in comparison to his own. Good luck making Rain detector […]

TDA1521- Stereo audio amplifier circuit modules

TDA1521 Audio circuit This is a stereo audio amplifier circuit modules that provides 12W IC TDA1521 schematic – TDA1521 – TDA1521Q is a dual hi-fi The audio power supply 0v terminal chassis 0v, and +16v connect chassis +16 -16 connect chassis -16v   TDA1521, TDA1521 Audio Stereo circuit, TDA1521 schematic, TDA1521 Stereo audio amplifier circuit […]

Microphone Preamplifier Circuit

Microphone Preamplifier Circuit Microphone Preamplifier Circuit using Transistors Tr BC109 Microphone Preamplifier Circuit using BC549C, BC547B

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