Power supply connection in bass preamp schematic

Discussion in 'The Projects Forum' started by Bigbizkit, Oct 29, 2015.

  1. Bigbizkit

    Thread Starter Member

    Oct 29, 2015
    44
    1
    Cant find the power supply connection in bass preamp schematic
    Hi guys, recently im looking for a bass preamp schematic and this site Bass Guitar Amp 1 got my interest. But the problem is the power supply connection is not indicated in the schematic, I am confused wich pin in the ic should i put the PS connection, i cannot tell if the project uses dual voltage positive, negative, and ground pwer supply or maybe a common positive, ground power supply? Are all the circuit uses the same power supply? Thank you in advance....[​IMG] p152-f7.gif p152-f5.gif p152-f4.gif p152-f9.gif p152-f7.gif
     
  2. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    I see that as a +/- 15 volt power supply, center grounded. Look at the datasheets for the amplifier chips to find the pins to connect to the voltages.

    Your absolute max is +/18V on the TL0 chip and the 2134 chip, and you always leave a safety margin.;)
     
    Last edited: Oct 29, 2015
  3. Bigbizkit

    Thread Starter Member

    Oct 29, 2015
    44
    1
    Thank younso much sir.
    So i just have to connect my power supply at pins4&8 then at center ground?
     
  4. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    Common doesn't get connected to the chips. They work in the middle of the voltages by the nature of the circuits. Common is connected to the inputs and feedback circuits (everywhere where the ground symbol is).
     
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