Voltage in noise part

Discuss Yocto construction and related issues
  • Dear Juicyboy,

    Is it the first instrument you built ?
    Could you adjust TM4 to get the 130mV ?
    If your negative regulator 7915 is working with loading resistor you can continue building the other instrument

    Best regards,
    e-licktornic
    Best regards,
    e-licktronic
  • e-licktronic wrote:Dear Juicyboy,

    Is it the first instrument you built ?
    Could you adjust TM4 to get the 130mV ?
    If your negative regulator 7915 is working with loading resistor you can continue building the other instrument

    Best regards,
    e-licktornic
    Yes, It was my first instrument. I got 130mV right away with little adjusting of TM4. I don't understand why people need to change their resistor values? Is it that they use cheap AC/AC power supplies or what?