metal detector

• 1x Battery 6V
• 1x 3,3K Resistor
• 1x 2,2K Resistor
• 1x 68 Ohm Resistor
• 1x 10 uF/16V Capacitor
• 1x 10pF Capacitor
• 1x 100pF Capacitor
• 1x L (Coil)
• 1x Transistor BC 548