metal detector using beat frequency


Posted on Feb 6, 2014

The NAND gates use CMOS 4011 chip, a low power component that is suitable for this battery-operated circuit. You can see that this chip is supplied by a 5V voltage coming from an LM7805L regulator. You might wonder what the purpose of this regulation is, since the power supply come from a 9V battery and the CMOS gates can handle the voltage of 3-1


metal detector using beat frequency
Click here to download the full size of the above Circuit.

5 Volt. The main purpose of the regulator is to keep a constant voltage source for the reference oscillator frequency stability, since the frequency is affected by the power supply voltage variation as the battery voltage drops in the long time of usage.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Controlling The Real World With Computers
    Laser Target Finder circuit
    Single IC chip Motor Driver for robots
    Unipolar-to-dual-supply-converter
    low power switching regulator
    motion sensor using pir sensor module
    electronic timer with display circuit
    12v led lamp circuit
    Power Supply
    Boss MT-2 Metal Zone distortion pedal schematic diagram



    Top