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Circuit 2N2222

Circuit 2N2222 for Headphone amplifier This circuit can source about 500mA continuously, You built a 2 transistor project and it worked great, but now it has stopped working. You decide the transistor may be faulty.

home stereo amplifier

home stereo amplifier using LA4261

Microphone circuit

Microphone circuit

Low amplifier is intended to be used in conjunction with an electric guitar

The following circuit diagram is designed to be used as an amplifier (including the loudspeaker, battery, input and output jack) that is placed into a pack of cigarettes or Fuzz-box. This small,  especially for training, either through a small loudspeaker or headphones are included. According to the designer amplifier can be used in three different […]

Power Supply

Dual Power Supply circuit using Transformers This is dual power supply using voltage regulator BC547B and Dioda. It’s the best and simplest choice for most non-critical applications. The 3 terminals are input, ground and output. The Dioda can provide up to 1A load current and it have onchip circuitry to prevent damage in the event […]

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