A very simple metal detector electronics, the project can be designed using a simple 555 timer integrated circuit. As you can see in the schematics, electronic projects require some electronic parts are available.
Archives for the ‘Simple Projects’ Category
Metal detectors based on 555 IC
Simple Mikro FM 90Mhz
This Simple Mikro FM 90Mhz circuit is the simplest circuit of an FM microphone you can get. It does not have microphone but the coil plays the part of microphone it will take sounds in the room by the vibrations on a table.
BELL ELECTRONICS
This Electronic bell circuit uses three op amp741. The Supply voltage of this circuit is dual type, it is between +-5 and +-12V (mounting dual regulated power supply is perfectly adapted). You can apply it as electronic door bells. By pressing and releasing the button immediately, we obtain a sound whose frequency is determined by the setting of the P1.
