Electronics as a Hobby

Posted on Feb 5, 2014

A single chip circuit for Echo & Delay. If you can modify a mic mixer circuit, you can easyly use this circuit with your microphone. PT2399 is an echo audio processor IC utilizing CMOS Technology which is equipped with ADC and DAC, high sampling frequency and an internal memory of 44K Digital processing is used to generate the delay time, it also features an internal VCO circuit in the system clock, thereby,

Electronics as a Hobby
Click here to download the full size of the above Circuit.

making the frequency easily adjustable. Very low distortion (THD<0. 5%) and very low noise (No<-90dBV). Thanks. That apparently comes from the IC data sheet at. There is a more complete data sheet available from, but the diagram for the echo application is not quite as easy to read. purob, I`m also interested in audio electronics. My sole interest so far has been analog sound synthesizers like Theremin or those made by Moog. It hasn`t become a fully qualified hobby yet. I`m still playing with a curcuit simulation program and haven`t really soldered anything. I`d really want to start practising with hardware. I like analog electronics. I enjoy thinking about it. However, my job is concerned with software that is very far from either sound or analog computations! I like playing with equipment. Both audio and video. Since I run a video post outfit I have lots of things lying around. Some which are useless I dismantle and learn from. And though dont have much knowledge can figure out whats wrong and repair loose connections etc. Its a combo of hobby and some professional income. From the year 2000 I started to work with various electronics projects like radio transmitters, audio amplifiers, sound processing kits, digital logic circuits, microprocessor based device, etc. But that time I had very poor knowledge about it. After I increased my knowledge it became a serious hobby to me. I like songs very much and like to sing. When...

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Stand-by power for non-volatile cmos rams
    nokia 6630 microphone problem picture
    Odd-ball PI circuit identification request and headroom question
    high-quality 2.3 GHz Amateur Radio Transceiver
    Making a BD139 voltage follower buffer
    Loudspeaking radio receiver with a bridge amplifier powered by free energy
    Buffer leakage current measurement circuit diagram OPA111 INA117