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Preamps Microphone Mixer circuit

Preamps Microphone Mixer circuit Choosing a good power amplifier is very easy but to choose the perfect microphone preamps is not easy, because the adjustment of sound pressure level (SPL) with volt level (dBu). Matching microphones and preamplifiers requires proper research and measurement, so to do this does not depend on your budget – but […]

Incubator Timer Circuit

Incubator Timer Circuit The circuit of the proposed incubator egg timer using LM741 This Egg Timer is quick, easy to use

AC DC VU METER Circuit

AC DC VU METER Circuit using PICAXE-08, 1N4004, BC338, 78L05, 7812

Portable detector

Portable detector Kristal Checker – Krystal Detector circuit using BC107 Kristal Checker – Krystal Detector circuit using BC107 Portable detector R1 ………….. 39K ohm R2 ………….. 1K ohm R3 ………….. 100K ohm C1 ………….. 680pF C2 ………….. 150pF C3 ………….. 1K pF C4 ………….. 4,7K pF TR1 …………. BC107 TR2 …………. BC107 D1 ………….. 1N60 […]

LM555 Electronic Schematic Diagram Variable period Oscillator CD4017 part 30

LM555 Electronic Schematic Diagram Variable period Oscillator CD4017 part 30

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