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    It is known, dear brothers, that converting the radio into a metal detector is done by using a transistor to be a signal transmitter, and the radio can be used to receive the signal. Only the voltage and its parts are available, but today we are talking about a topic that I thought of in order to overcome the defects of instability in the first way, and therefore we need a signal transmitter other than the transistor.
    Convert radio to metal detector using ic555
    Since the ICSI 555, which is known as the timer, is a signal transmitter that we can control, I thought of sending a signal to the ground through a coil (coil) that is connected to the IC555 output, but first we must know what is the best signal to transmit, and in fact I thought of the same value as the signal sent by the transistor With a difference in shape.
    Pieces required in this method:
     a radio containing short wave or am wave
     ic555 with its base (1)
     Capacitor 104 number 2
    capacitor 10 micro number 1
     Resistors 390 ohm 1 number and 1 kilo resistance 1
     transistor 2n3904 number 1
     Shi'a (file)
     5 volt battery
    Convert your radio into a metal detector
    صورة توضيحية لربط الدائرة:
    Using AISI 555 to convert your radio into a metal detector
    Convert your radio into a metal detector using IC555
    Explanatory video
    to connect the circuit

    Practical and applied video to operate the circuit
    Please watch the video of the experiment in the اصنع 
    كاشف معادن channel

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