ib metal detector

This is a simple alarm circuit that produces a musical tone when water or any conductive liquid comes into contact with the two sensor wires provided. The circuit utilizes four transistors and one melody generator IC (M3482). When water...

All components used in the Moving Sensor/Detector Schematic Diagram utilize the IC NE555 and the Phototransistor L14F. The primary component in this circuit is the IC NE555, along with an IR LED, the Phototransistor L14F, and the IC LM1458....

A single chip metal detector with a range of a few inches. This is useful for detecting nails or screws in walls and floors, or for locating buried mains cable. The heart of the circuit is a single IC,...

This schematic diagram illustrates a 555 IC water level sensor and detector alarm circuit. The circuit is powered by the emitter current of the BC109C transistor. The 555 timer operates as an astable oscillator in this configuration. Under dry...

This portable mobile transmission detector can detect the presence of an activated mobile phone from a distance of 1.5 meters. It is designed to prevent the use of mobile phones in examination halls, confidential areas, and other restricted environments....

This circuit detects the approximately 20-Hz, 86-Vrms ring signal on telephone lines and initiates action in an electrically isolated circuit. Typical applications include automatic answering equipment, interconnect/interface systems, and key systems. The detector is designed to be simple and...