Telephone electronic ringer circuit


Posted on Feb 7, 2014

Telephone electronic ringer circuit is shown as above,Figure (a) is the electronic ring circuit with an NPN transistor V1 (choose 9014 or 3DG12) as the core, sound devices YD is also feedback devices composed of the feedback pole and the buzzer equipped with the help of the sound chamber. L1, L2 connect to circuit line;C1 and R1 have limiting and reducting v..


Telephone electronic ringer circuit
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Comparator for over-voltages
    USB Powered Stereo PC Multimedia Speaker
    arduino How to make a clean amplified microphone analog to digital conversion
    Stereo preamplifier with tone control
    Antenna selector circuit diagram electronic project
    Mains surge suppression
    GE/MACOM MASTR-III VHF Station



    Top