morse code oscillator schematic

Portable Morse Code Practice Oscillator

T.K. Hareendran - 05/16/14

Little circuit of a Morse Code Oscillator is presented here. Excellent for learning and teaching Morse code, this [...]

Muting Transistor Attenuator Circuits and the 2SC2878

Jim Keith - 01/25/14

Among semiconductors, the muting transistor and its audio application is perhaps the most obscure and poorly understood of [...]
cmoy headphone amp

CMoy Headphone Amp

GaryC - 01/03/14

The CMoy headphone amp is a popular headphone amplifier that is small enough to carry everyday and powerful [...]

Hybrid Headphone Amp

GaryC - 12/26/13

Potentially, headphone listening can be technically superior since room reflections are eliminated and the intimate contact between transducer [...]
Update Audio Compressor AGC Schematic 2

Audio Compression Amplifier /AGC

Jim Keith - 12/21/13

This is an audio compressor/AGC (automatic gain control) with an astonishing 75db input voltage range. A P-Channel JFET [...]
kojak siren circuit

Kojak Siren

P. Marian - 10/28/13

Here is a very simple Kojak siren that is built with two 555 timer ICs and has 2 [...]
la4440 audio amplifier schematic

LA4440 Audio Amplifier

GaryC - 07/26/13

Application: Make your own computer speaker system. This simple and inexpensive project will let you set up a [...]
Low Vcc Amplifier Schematic

Low Voltage Audio Amplifier

Jim Keith - 04/29/13

This experimental (3) transistor class A audio power amplifier delivers 25mW into an 8Ω load, or 50mW into [...]
tda7294 bridged

TDA7294 Audio Amplifier Circuits

P. Marian - 01/07/13

TDA7294 is a monolithic integrated circuit in Multiwatt15 package, with high output power (up to 100W) intended for [...]

TDA2030 Audio Amplifier Circuits

P. Marian - 01/07/13

TDA2030 is a monolithic integrated circuit in Pentawatt package, intended for use as a low frequency class AB [...]

TDA2005 Audio Amplifier Circuits

P. Marian - 01/07/13

TDA2005 is a class B dual audio power amplifier specifically designed for car radio applications. Its high current [...]

TDA2003 Audio Amplifier Circuits

P. Marian - 01/07/13

TDA2003 is a cheap amplifier that is designed to run on single rail power supplies (unipolar). It provides [...]
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