METAL DETECTOR (Soldering) DIY Kits

Description

This circuit most useful for security checking Metal Detector available in the market are quite expensive

This metal detector can be used to detect slightly big size metallic objects tune sensing Coil This Col should be kept near metallic objects for defection. The input of Circuit is s wenk Colpitts R.F. range Oscillator. Sensing coll forms parts of tuned Oscillator

When the coil is brought near a metallic object magnetic energy is absorbed and Oscillator tails to work. Then tinal transistor conducts and the buzzer is activator Use a9 volts battery Alter connecting battery, adjust the 4.7K preset till circuit st loop Sounding

• COIL
• RF SECTION
• RF AMP
• PIEZO ALARM