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Posts tagged LM555

Circuit Board Led

Circuit Board Led using CD4017 and LM555

Electronic Circuit Ultrasonic motion detector using LM1458 – LM555

Electronic Circuit Ultrasonic motion detector using LM1458 – LM555 Electronic Circuit Ultrasonic motion detector using LM1458 – LM555 has several advantages and disadvantages. The main advantage is that they are very sensitive and very fast acting. However, the biggest problem with the type of motion detectors is that sometimes respond to normal environmental vibration that […]

Audio Amplifier circuit using LA4446

Audio Amplifier circuit using LA4446 Here is a simple audio amplifier using IC LA4446

sound system equipment

sound system equipment sound system equipment Audio Mixer circuit diagram Using FET This simple circuit mixes two or more channels into one channel (eg. stereo into mono). Parts R1, R3 10K Pot R2, R4 100K 1/4 W Resistor R5 6.8K 1/4 W Resistor C1, C2, C3 0.1uF Capacitor Q1 2N3819 Junction FET MISC Wire, Shielded […]

Project for 20 or 40 watt fluorescent tubes – Inverter

This is a low-cost project for 20 or 40 watt fluorescent tubes, However the most efficient is to use a 40 watt tube or two 20 watt tubes in series. It is a circuit you can put together from junk box components or build from a kit. It is very simple to build and requires […]

This circuit is a very sensitive 3-transistor amplifier (27MHz)

This circuit is a very sensitive 3-transistor amplifier (27MHz) This circuit is a very sensitive 3-transistor amplifier (27MHz) R1 ………….. 4,7K R2 ………….. 39K R3 ………….. 150 R4 ………….. 1K R5 ………….. 10K R6 ………….. 270 R7 ………….. 150 R8 ………….. 4,7K R9 ………….. 220K C1 ………….. 22pF C2 ………….. 22pF C3 ………….. 22pF C4 […]

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